Casio fx-570CW User Manual
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Casio fx-570CW User Manual

Casio fx-570CW User Manual

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fx-570CW
fx-991CW
User's Guide
CASIO Worldwide Education Website
https://edu.casio.com
Manuals are available in multi languages at
https://world.casio.com/manual/calc/
EN

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Summary of Contents for Casio fx-570CW

  • Page 1 User’s Guide CASIO Worldwide Education Website https://edu.casio.com Manuals are available in multi languages at https://world.casio.com/manual/calc/...

  • Page 2: Table Of Contents

    Table of Contents Before Using the Calculator ........... 5 Read This First ..................5 About This Manual ..................5 Key Operations ....................5 Menu Operations ....................6 Key and Key ..................7 Examples ....................... 7 Initializing the Calculator ................. 7 Calculator "Get Started" Screen ............. 7 Precautions .....................
  • Page 3 Pi, Natural Logarithm Base e ..............34 Pi ........................34 Natural Logarithm Base e ................34 Calculation History and Replay .............34 Calculation History ..................34 Replay ......................35 Using Memory Functions ..............35 Answer Memory (Ans) ..................35 Variables (A, B, C, D, E, F, x, y, z) ..............36 Clearing the Contents of All Memories ............38 Changing Calculation Result Format ........
  • Page 4 Engineering Symbols ................56 Scientific Constants ................57 Unit Conversions ...................58 Others ....................60 Registering and Using Defining Equations for f(x) and g(x) ....................61 Registering and Using Defining Equations for f(x) and g(x) ....61 Registering a Defining Equation ..............61 Performing a Calculation by Assigning a Value to the Registered Defining Equation .......................
  • Page 5 Equation Calculations ................99 Simultaneous Linear Equations ..............100 High-order Equations from 2nd to 4th Degree ........... 101 Using Solver ....................105 Inequality Calculations ................ 107 General Procedure for Performing an Inequality Calculation .....107 Complex Number Calculations ............109 Inputting Complex Numbers ...............109 Complex App Calculation Examples ............

  • Page 6: Before Using The Calculator

    Read This First About This Manual • In no event shall CASIO Computer Co., Ltd. be liable to anyone for special, collateral, incidental, or consequential damages in connection with or arising out of the purchase or use of this product and items that come with it.

  • Page 7: Menu Operations

    * Refer to "Key Markings" (page 13) for more information about the key symbols used in this example. Example 3: • Individual cursor keys indicated by (1) are represented as • Individual page scroll keys indicated by (2) are represented as Menu Operations Some operations in this manual use a simplified form of menu operations, as shown in the examples below.

  • Page 8: Key And Key

    Press , select the Calculate app icon, and then press Actual Operation 2 1. Press 2. Use the cursor keys ( ) to select the Calculate app icon, and then press Key and key and key perform the same operation. In this manual, used for selecting or applying a setting, while is used for executing a calculation.

  • Page 9: Precautions

    19). Precautions Safety Precautions Thank you for purchasing this CASIO product. Be sure to read the "Safety Precautions" before using this product to ensure that you use it correctly. Be sure to keep all user documentation handy for future reference.
  • Page 10 Display Screen Do not press the LCD or subject it to strong impact. Doing so can cause the LCD glass to crack, creating the risk of personal injury. Should the LCD become cracked, never touch any of the liquid inside. LCD liquid getting on the skin creates the risk of skin irritation.

  • Page 11: Handling Precautions

    • Do not subject a battery to excessively low barometric pressure during use, storage, or transport. Handling Precautions • fx-570CW: Even if the calculator is operating normally, replace the battery at least once every two years (R03). fx-991CW: Even if the calculator is operating normally, replace the battery at least once every two years (LR44).
  • Page 12 To attach the front cover When you are not using the calculator, remove the front cover (①) and attach it to the front (②).

  • Page 13: Turning Power On And Off

    Important! • Always attach the front cover to the calculator whenever you are not using it. Otherwise, accidental operation of the key can cause the power to turn on and run down the battery. Turning Power On and Off Press to turn on the calculator.

  • Page 14: Home Screen

    HOME Screen Pressing displays the HOME screen. The HOME screen shows a list of installed calculator apps.   HOME Screen   Calculate App Screen                   For information about installed calculator apps, see "Installed Calculator App List" (page 17). Adjusting Display Contrast 1.

  • Page 15: Indicators

    Indicators Indicators The table below describes indicators that appear at the top of the screen. This indicator: Means this: The keypad has been shifted by pressing the key. The keypad will unshift and this indicator will disappear when you press a key. MathI/MathO or MathI/DecimalO is selected for Input/Output on the SETTINGS menu.

  • Page 16: Using Menus

    Using Menus Many of the operations of your calculator are performed using menu screens. The example below shows operations starting from the menu screen that appears when you press Selecting a Menu Item To select a menu item, use the cursor keys ( ) to highlight it and then press .
  • Page 17 To configure the setting of a radio button menu item 1. Highlight the applicable menu item and then press • What happens next depends on the type of menu item you selected. - If there are no more settings to configure for the menu item you selected, the radio button next to it will change to - The menu item you selected has more settings to configure, a screen for selecting the menu item setting will appear.

  • Page 18: Calculator Apps And Menus

    Calculator Apps and Menus Calculator Apps Selecting a Calculator App Select a calculator app that is suitable for the type of calculation you want to perform. 1. Press to display the HOME screen. • For information about each calculator app, see the "Installed Calculator App List"...
  • Page 19 Spreadsheet calculations (Spreadsheet) Generates a number table based on one or two functions (Table) Simultaneous equations, higher- order equations, and Solver (function to find the value of any variable contained in an input (Equation) equation) Inequality calculations (Inequality) Complex number calculations (Complex) Calculations involving specific number systems (binary, octal,...

  • Page 20: Using The Settings Menu

    Ratio calculations (Ratio) The following functions to support math learning. Dice Roll, Coin Toss: Probability (Math Box) simulation Using the SETTINGS Menu To display the SETTINGS menu, press while using a calculator app. The SETTINGS menu includes the menu items below. Includes menu items for configuring calculation Calc Settings settings, such as the display format for...

  • Page 21: Items And Available Setting Options

    2. Press to display the SETTINGS menu. 3. Use to select Calc Settings or System Settings, and then press • This displays a list of setting items included on the selected menu. The screen here shows an example of what appears when [Calc Settings] is selected.
  • Page 22 Input: Linear* ; Output: Decimal or LineI/LineO fraction Input: Linear* ; Output: Converted LineI/DecimalO to decimal value Decimal output is applied when these formats cannot be output for some reason. All calculations, including fractions and functions are input in a single line.
  • Page 23 Fix: The value you specify (from 0 to 9) controls the number of decimal places for displayed calculation results. Calculation results are rounded off to the specified digit before being displayed. Example: 1 ÷ 6 (Fix 3) Sci: The value you specify (from 1 to 10) controls the number of significant digits for displayed calculation results.
  • Page 24 Note • An indicator (E) is displayed at the top of the screen while On is selected for this setting. Calc Settings > Fraction Result ◆ Mixed Fraction; Improp Fraction Specifies either mixed fraction or improper fraction for display of fractions in calculation results.
  • Page 25 System Settings > Auto Power Off ◆ 10 Min. ; 60 Min. Specify the amount of time until Auto Power Off is triggered. System Settings > MultiLine Font ◆ Normal Font ; Small Font Specifies the display font size when LineI/LineO or LineI/DecimalO is selected for Input/Output.

  • Page 26: Using The Catalog Menu

    1. Press , select a calculator app icon, and then press 2. Press , and then select [Reset] > [Settings & Data] > [Yes]. • This displays the HOME screen. Using the CATALOG Menu Press to display the CATALOG menu. This menu shows categories of the commands, functions, and symbols in accordance with the calculator app you are currently using and the current status (displayed screen or current settings) of the app.
  • Page 27 Note • The menu items below are common to multiple calculator apps. - Undo (See "Undo Operations" (page 29).)

  • Page 28: Inputting Expressions And Values

    Inputting Expressions and Values Basic Input Rules When you press the priority sequence of the input calculation will be evaluated automatically and the result will appear on the display. 4 × sin 30 × (30 + 10 × 3) = 120 Input of the closing parenthesis is required for sin and other functions that include parentheses.

  • Page 29: Inputting An Expression Using Natural Textbook Format (Mathi/Matho Or Mathi/Decimalo Only)

    Parentheses Auto Complete If you execute a calculation that includes both division and multiplication operations in which a multiplication sign has been omitted, parentheses will be inserted automatically as shown in the examples below. - When a multiplication sign is omitted immediately before an open parenthesis or after a closing parenthesis.

  • Page 30: Undo Operations

    3. Do the same to input the remainder of the expression. Note • While the input cursor is located within the input area of a template (mixed fractions, integration (∫) and summation (Σ)), pressing jumps to the position immediately following (to the right of) the template, while pressing jumps to the position immediately before (to the left of) it.

  • Page 31: Basic Calculations

    Basic Calculations Arithmetic Calculations Use the , and keys to perform arithmetic calculations. Example: 7 × 8 - 4 × 5 = 36 Fraction Calculations Note that the input method for fractions depends on the current Input/ Output setting on the SETTINGS menu. To input (improper fraction) (Input/Output: MathI/MathO or MathI/DecimalO)
  • Page 32 (a) Numerator, (b) Denominator, (c) Integer Part Example: (Input/Output: MathI/MathO) (Input/Output: LineI/LineO) Note • Fractions in calculation results are displayed after being reduced to their lowest terms. To convert a calculation result format to improper fraction or mixed fraction, press .

  • Page 33: Powers, Power Roots, And Reciprocals

    (Input/Output: LineI/LineO) 1234567 Since the total number of digits of the value 1 1 1234567 is 11, the result is displayed as a decimal value. Note • Mixing fractions and decimal values in a calculation while something other than MathI/ MathO is selected will cause the result to be displayed as a decimal value.
  • Page 34 Example 4: √32 = 2 (Input/Output: MathI/MathO) (Input/Output: LineI/LineO) ) 32 Example 5: (Input/Output: MathI/MathO) Key (Power of 10) Pressing the key is the same as pressing . Both operations input "×10 " (MathI/MathO or MathI/DecimalO) or "×10^(" (LineI/LineO or LineI/DecimalO).

  • Page 35: Pi, Natural Logarithm Base E

    Example: • 10√2 + 15 × 3√3 = 45√3 + 10√2 ... Displayed in √ form • 99√999 (= 297√111) = 3129.089165 ... Displayed as a decimal value Pi, Natural Logarithm Base e Input π by pressing (π). π is displayed as 3.141592654, but π = 3.1415926535897932384626 is used for internal calculations.

  • Page 36: Replay

    Note • Calculation history data is all cleared whenever you press , when you change the Input/Output setting, or whenever you perform a Reset operation ("Settings & Data" or "Initialize All"). Replay While a calculation result is on the display, you can press edit the expression you used for the previous calculation.

  • Page 37: Variables (A, B, C, D, E, F, X, Y, Z)

    Inputting Ans Memory Contents into an Expression Example: To perform the calculations shown below: (Continuing) 789 Variables (A, B, C, D, E, F, x, y, z) You can store values to variables and use the variables in calculations. Variable List Screen Pressing displays a screen that shows the values currently stored to variables A, B, C, D, E, F, x, y, and z.
  • Page 38 2. Press • This displays the editing screen with 1 entered. 3. Press Note • In place of the operation in step 2 above, you can press and then select [Edit]. This displays the editing screen with nothing input. Input the value you want and then press •...

  • Page 39: Clearing The Contents Of All Memories

    Clearing the Contents of All Memories Ans memory and variable contents are retained even if you press change the calculator app, or turn off the calculator. Perform the procedure below when you want to clear the contents of all memories. 1.

  • Page 40: Changing Calculation Result Format

    Changing Calculation Result Format Using the FORMAT Menu You can use the FORMAT menu that appears when you press convert a displayed calculation result to various formats. FORMAT Menu List This menu item: Converts to this format: Standard (Includes fraction, π, Standard √...

  • Page 41: Conversion Sample Operation

    Note • The menu items that appear when is pressed depend on the currently displayed calculation result. Also, if a calculation result that cannot be converted is displayed, the menu will not appear when you press Conversion Sample Operation Example: 3 ÷...

  • Page 42: Prime Factorization

    Note • Conversion to Standard format that includes √ or π is possible when MathI/MathO or MathI/DecimalO is selected for the Input/Output setting on the SETTINGS menu. You can use the operation below to convert a calculation result to the Standard or Decimal format.

  • Page 43: Rectangular And Polar Coordinate Conversion

    Example: To perform prime factorization on 1014 1014 – [Prime Factor] Note • The types of values described below cannot be factored, even if they have 10 or fewer digits. - One of the prime factors of the value is 1,018,081 or greater. - Two or more of the prime factors of the value have more than three digits.

  • Page 44: Improper Fraction And Mixed Fraction Conversion

    Improper Fraction and Mixed Fraction Conversion You can convert the currently displayed fraction or decimal value (decimal value that is convertible to a fraction by this calculator) calculation result to a mixed fraction or an improper fraction. Example 1: (Input/Output: MathI/MathO, Fraction Result: Improp Fraction) –...

  • Page 45: Sexagesimal Conversion (Degree, Minute, Second Calculations)

    • Entering the ENG Conversion Mode converts the calculation result to engineering notation and causes to appear to its right. • In the ENG Conversion Mode, you can use to shift the decimal point of the mantissa. 3. To exit the ENG Conversion Mode, press •...

  • Page 46: Inputting And Calculating With A Sexagesimal Value

    – [Sexagesimal] Inputting and Calculating with a Sexagesimal Value In addition to converting a displayed value to a sexagesimal value, you can also input sexagesimal values and use them in calculations. The syntax below is for inputting a sexagesimal value: {degrees} ) {minutes} ) {seconds}...

  • Page 47: Advanced Calculations

    Advanced Calculations This section describes commands, functions, and symbols that are common to all of the calculator apps. The order used here to present commands, functions, and symbols is the same order in which they are displayed on the CATALOG menu that appears when you press Note •...

  • Page 48: Integration(∫)

    Input/Output setting Input Syntax MathI/MathO or MathI/DecimalO (f(x))| (f(x), a, tol)* LineI/LineO or LineI/DecimalO * tol specifies tolerance, which becomes 1 × 10 when nothing is input for tol. Derivative Calculation Precautions • When using a trigonometric function in f(x), specify "Radian" as Angle Unit on the SETTINGS menu.
  • Page 49 Note • This function can be used with any of the following calculator apps: Calculate, Statistics, Distribution, Spreadsheet, Table, Equation, Inequality, Matrix, Vector, Ratio. Input Syntax The input syntax depends on the Input/Output setting on the SETTINGS menu, as shown in the table below. Input/Output setting Input Syntax MathI/MathO or MathI/DecimalO...

  • Page 50: Summation(Σ)

    (Input/Output: LineI/LineO) – [Func Analysis] > [Integration(∫)] (ln) (,)1 Summation(Σ) With Σ(, you can obtain the sum of an input f(x) expression for a specific range. Note • This function can be used with any of the following calculator apps: Calculate, Statistics, Distribution, Spreadsheet, Table, Equation (except for Solver), Inequality, Matrix, Vector, Ratio.

  • Page 51: Logarithm(Logab), Logarithm(Log)

    – [Func Analysis] > [Summation(Σ)] (,)1 (,)5 Logarithm(logab), Logarithm(log) (log) or – [Func Analysis] > [Logarithm(log)] to input log b as log (a, b). Base 10 is the initial default setting if you do not input anything for a. Example 1: 1000 = log 1000 = 3 (log)1000 Example 2:...

  • Page 52: Factorial(!)

    Inputting a value followed by % command causes the input value to become a percent. Note • You cannot input % with the Complex app. Example 1: 150 × 20% = 30 – [Probability] > [%] Example 2: Calculate what percentage of 880 is 660. (75%) –...

  • Page 53: Random Number

    Permutations: – [Probability] > [Permutation(P)] Combinations: – [Probability] > [Combination(C)] Random Number This function generates a pseudo random number in the range of 0.000 to 0.999. The result is displayed as a fraction when MathI/MathO is selected for Input/Output on the SETTINGS menu. Note •...

  • Page 54: Numeric Calculations

    Numeric Calculations This section explains commands and functions that you can input after performing the operation: – [Numeric Calc]. Absolute Value When you are performing a real number calculation, this function simply obtains the absolute value. Example: |2 - 7| = Abs(2 - 7) = 5 (Input/Output: MathI/MathO) –...

  • Page 55: Angle Unit, Polar/Rectangular Coordinate, Sexagesimal

    Angle Unit, Polar/Rectangular Coordinate, Sexagesimal This section explains commands, functions, and symbols that you can input after performing the operation: – [Angle/Coord/Sexa]. Degrees, Radians, Gradians These functions specify the angle unit. ° specifies degree, radian, and gradian. You can input each function using the menu items below. –...

  • Page 56: Degrees, Minutes, Seconds

    Example 1: To convert rectangular coordinates (√2, √2) to polar coordinates (Input/Output: MathI/MathO, Angle Unit: Degree) – [Angle/Coord/Sexa] > [Rect to Polar] Example 2: To convert polar coordinates (√2, 45°) to rectangular coordinates (Input/Output: MathI/MathO, Angle Unit: Degree) – [Angle/Coord/Sexa] > [Polar to Rect] (,) 45 Degrees, Minutes, Seconds You can use the keys or the menu item below to input the sexagesimal...

  • Page 57: Engineering Symbols

    Menu Item – [Hyperbolic/Trig] > [sin] – [Hyperbolic/Trig] > [cos] – [Hyperbolic/Trig] > [tan] (sin – [Hyperbolic/Trig] > [sin (cos – [Hyperbolic/Trig] > [cos (tan – [Hyperbolic/Trig] > [tan Specify the Angle Unit on the SETTINGS menu before performing calculations. Example: sin 30 = (Angle Unit: Degree)

  • Page 58: Scientific Constants

    Example 2: To calculate 999k (kilo) + 25k (kilo) = 1.024M (Mega) = 1024k (kilo) = 1024000 (Engineer Symbol: On) – [Engineer Symbol] > [Kilo] – [Engineer Symbol] > [Kilo] – [ENG Notation] (Enters the ENG Conversion Mode.) • Pressing , or exits the ENG Conversion Mode and causes to disappear from the display.

  • Page 59: Unit Conversions

    3. Select [c], and then press 4. Press * The table below shows the scientific constants included in each category. Category Scientific Constants Universal , c, ε , μ , G, l , μ , e, Φ Electromagnetic μ , α, r , λ...
  • Page 60 • This displays a menu of conversion commands in the Length category. 4. Select [cm in] (the centimeters-to-inches conversion command) and then press 5. Press * The table below shows the unit conversion commands included in each category. Category Unit Conversion Commands in cm, cm in, ft m, m ft, yd m, m Length yd, mile km, km mile, n mile m,...

  • Page 61: Others

    Others Functions and symbols that can be input with the calculator keys can also be input using the [Other] menu. Use – [Other] to display the function and symbol menu. For example, to input Ans, you could either press perform the following operation: –...

  • Page 62: Registering And Using Defining Equations For F(X) And G(X)

    Registering and Using Defining Equations for f(x) and g(x) Registering and Using Defining Equations for f(x) and g(x) Your calculator includes "f(" and "g(" functions that you can use after registering defining equations for them. For example, after registering f(x) + 1 as a defining equation for the "f("...

  • Page 63: Performing A Calculation By Assigning A Value To The Registered Defining Equation

    However, depending on the screen displayed by the calculator app (for example, if a menu screen is displayed), the menu may not appear when you press Performing a Calculation by Assigning a Value to the Registered Defining Equation Example 2: To assign the value x = 3 to f(x), which you registered in Example 1 (Continuing from Example 1)

  • Page 64: Data Retention

    • In the operation of Example 3, you input f(x) into the defining equation of g(x). Conversely, you can also input g(x) into the f(x) defining equation. However, do not have g(x) input into f(x), and f(x) input into g(x) at the same time. If you do, a Circular ERROR will occur when you perform a calculation using f(x) or g(x).

  • Page 65: Using Qr Code Functions

    Code reader that can read multiple QR Code symbols, and it can connect to the Internet. • Scanning a QR Code displayed by this calculator with a smart device will cause the smart device to access the CASIO website. Note • QR Code appears on the display whenever you press (QR) while any one of the screens below is displayed.

  • Page 66: If You Experience Difficulty Scanning A Qr Code

    QR Code display, the message "Not Supported (Version 3)" will appear. However, the QR Code produced by this setting is easier to scan with a smart device. • For more information, visit the CASIO website (https://wes.casio.com).

  • Page 67: Using Calculator Apps

    Using Calculator Apps Statistical Calculations The Statistics app calculates various statistical values based on single- variable (x) or paired-variable (x, y) data. General Procedure for Performing a Statistical Calculation 1. Press , select the Statistics app icon, and then press 2.

  • Page 68: Inputting Data With Statistics Editor

    Paired-variable 6. Select the menu item for the operation you want to perform. • Select [1-Var Results], [2-Var Results], or [Reg Results] to see a list of calculation results based on the data you entered. For details, see "Displaying Statistical Calculation Results" (page 70).
  • Page 69 Single-variable Paired-variable To display the Freq column 1. While the Statistics Editor is displayed, press and then select [Frequency] > [On]. 2. Press to return to the Statistics Editor. To hide the Freq column 1. While the Statistics Editor is displayed, press and then select [Frequency] >...
  • Page 70 3. Use the operation below to input data. Note • On the Statistics Editor, you can store the value in a cell to a variable. For example, performing the following operation while the screen in step 3 is displayed above will store 68 to variable A: –...

  • Page 71: Displaying Statistical Calculation Results

    Example 2: To sort the data input in Example 1 (page 68) in ascending order on the x column, and then in descending order on the y column 1. Use the procedure in Example 1 to input the data. 2. Sort the data in ascending order on the x column. –...
  • Page 72 6. Press 7. Select [1-Var Results], and then press • This displays the 1-Var Results screen. • For the meanings of the variables shown on the 1-Var Results screen, see the "List of Statistical Value Variables and Statistical Calculation Functions" (page 77).
  • Page 73 4. Input data into the y-column. 5. Press 6. Select [2-Var Results], and then press • This displays the 2-Var Results screen. • For the meanings of the variables shown on the 2-Var Results screen, see the "List of Statistical Value Variables and Statistical Calculation Functions"...
  • Page 74 Example 5: To use the paired-variable data input in Example 4 (page 71) and display the results of the two regression calculations shown below • The regression equation "y = a + bx" coefficients (a, b), and the correlation coefficient (r) when linear regression is performed on the data •...

  • Page 75: Using Statistical Calculation Screen

    Supported Regression Type List Regression Equation Regression Type (regression type menu item) Linear Regression y = a + bx Quadratic Regression y = a + bx + cx Logarithmic Regression y = a + b･ln(x) e exponential Regression y = a･e^(bx) ab exponential Regression y = a･b^x y = a･x^b...
  • Page 76 Displaying a Statistical Calculation Screen Single-variable 1. While the Statistics Editor is displayed, press 2. On the menu that appears, select [Statistics Calc] and then press Paired-variable 1. While the Statistics Editor is displayed, press 2. On the menu that appears, select [Statistics Calc] and then press •...
  • Page 77 – [Statistics] > [Summation] > [Σx] 4. Calculate the mean (x). – [Statistics] > [Mean/Var/Dev ... ] > [x] Note • To display the 1-Var Results screen from the statistical calculation screen above, press and then select [1-Var Results]. To return to the statistical calculation screen from the 1-Var Results screen, press Example 7: To determine the coefficients (a, b) and correlation coefficient...
  • Page 78 – [Statistics] > [Regression] > [r] • To select a different regression type, press and then select [Select Reg Type]. This displays the regression type menu from step 2. To display the 2-Var Results screen from a statistical calculation screen Press and then select [2-Var Results].
  • Page 79 min(x)* ..minimum value * ..first quartile Med* ..median * ..third quartile max(x)* ..maximum value – [Statistics] > [Norm Dist] (Single-Variable Data Only) P(*, Q(*, R(*, t* ..Functions for executing normal distribution calculations. For more information about these functions, see "Performing Normal Distribution Calculations (Single-Variable Data Only)"...
  • Page 80 menu that appears when you press and then select [Statistics] > [Norm Dist]. P(, Q(, R( ... These functions take the argument t and determine a probability of standard normal distribution as illustrated below. t ..This function is preceded by the argument x. It calculates the standard variate for data value x using the mean value (x) and population standard deviation (σ...

  • Page 81: Statistical Calculation Formula

    Example 9: To determine the estimated value for y when x = 5.5 in the regression equation produced by linear regression of the data input in Example 4 (page 71) 1. Perform steps 1 through 5 of the procedure under Example 4 (page 71).
  • Page 82 Regression Calculation Formula Linear Regression (y = a + bx) Quadratic Regression (y = a + bx + cx...
  • Page 83 Logarithmic Regression (y = a + b･ln(x)) e Exponential Regression (y = a･e^(bx)) ab Exponential Regression (y = a･b^x) Power Regression (y = a･x^b)

  • Page 84: Distribution Calculations

    Inverse Regression (y = a + b/x) Distribution Calculations In the Distribution app, you can obtain the probability value by selecting the distribution calculation type and inputting various parameters.* Executable distribution calculation types are shown in the table below. Distribution Calculation Type Menu Item Binomial probability Binomial PD...

  • Page 85: General Procedure For Performing A Distribution Calculation

    General Procedure for Performing a Distribution Calculation Example: To calculate binomial cumulative probability for the x data {2, 3, 4, 5} when N (number of trials) = 5 and p (probability of success) = 0.5 1. Press , select the Distribution app icon, and then press •...

  • Page 86: Parameter List

    • This displays the calculation result screen. • If you selected [List] in step 3, calculation results (P column) will appear on the list screen. For details, see "List Screen" (page 86). • If you perform any editing operation (see "Editing the List Screen Contents"...

  • Page 87: List Screen

    μ … population mean σ … population standard deviation (σ > 0) Inverse Normal Area … probability value (0 ≤ Area ≤ 1) μ … population mean σ … population standard deviation (σ > 0) (Tail setting always left.) Poisson PD, Poisson CD x …...

  • Page 88: Editing The List Screen Contents

    - Executing [Delete All] (See "To delete all list screen contents" (page 87).) - Executing – [Reset] > [Settings & Data] or – [Reset] > [Initialize All] Editing the List Screen Contents To change the x data in a cell On the list screen, move the cursor to the cell containing the data you want to change, input the new data, and then press To delete a row...

  • Page 89: Using Spreadsheet

    • Pressing again or pressing returns to the parameter input screen in step 3 of this procedure. • You can store the currently displayed calculation result to a variable. For example, performing the following operation while the screen in step 4 is displayed above will store the calculation result to variable A: –...

  • Page 90: Inputting A Constant And Formula Into A Cell

    expression (such as 7+3, sin30, A1×2, etc.) that does not have an equal sign (=) in front of it. Formulas: A formula that starts with an equal sign (=), such as =A1×2, is executed as it is written. Note • A maximum of 49 bytes can be input into a cell (number of bytes before the input is confirmed by pressing ) that is being edited.

  • Page 91: Cell Relative And Absolute References

    store 42 (calculation result of the formula input into cell B1) to variable A: – [A=] > [Store]. For details about variables, see "Variables (A, B, C, D, E, F, x, y, z)" (page 36). • You can specify whether a formula in the edit box should be displayed as it is or as its calculation result value.
  • Page 92 copying and then pasting to cell C3 will result in =B3+7 being input into cell C3. Since the copy and paste operation moves the formula one column (B to C) and two rows (1 to 3) the A1 relative cell reference in the formula is moved one column and two rows to B3.

  • Page 93: Using Spreadsheet App Special Commands

    3. Move the cursor to the cell into which you want to paste the data you just copied, and then press • Paste standby remains enabled until you press , so you can paste the copied data to other cells, if you want. Note •...

  • Page 94: Batch Inputting The Same Formula Or Constant Into Multiple Cells

    – [Spreadsheet] > [Sum] – [Spreadsheet] > [:] 3. Press Batch Inputting the Same Formula or Constant into Multiple Cells You can use the procedures in this section to input the same formula or constant into a specific series of cells. Use the Fill Formula command to batch input a formula, or Fill Value to batch input a constant.

  • Page 95: Spreadsheet App Setting Items

    To batch input the same constant into a series of cells Example 5: Continuing from Example 4, batch input into cells C1, C2, and C3 values that are triple the values in the cells to their left. 1. Move the cursor to cell C1. 2.

  • Page 96: Auto Calc And Recalculate

    Auto Calc and Recalculate "Auto Calc" is a setting item on the TOOLS menu (see "Spreadsheet App Setting Items" (page 94)). With the Spreadsheet app’s initial default setting (Auto Calc: On), formulas in a cell are automatically re-calculated each time the cell contents are edited.

  • Page 97: Maximum Number Of Rows In A Number Table According To Table Type

    2. Configure settings to generate a number table from two functions. (1) Press , and then select [Table Type] > [f(x)/g(x)]. (2) Press • For information about settings, see "Maximum Number of Rows in a Number Table According to Table Type" (page 96).

  • Page 98: Defining Equation Registration

    appears when you press – [Table Type] while the number table screen is displayed. f(x)/g(x) ... Show both f(x)- and g(x)-columns (initial default setting) f(x) ... Show only f(x)-column g(x) ... Show only g(x)-column The maximum number of rows in the generated number table depends on the Table Type setting.

  • Page 99: F(X) And G(X) Update Timing

    To insert a row 1. On the number table screen, move the cursor to the row that will be under the row you will insert. 2. Perform the following operation: – [Edit] > [Insert Row]. To delete all number table screen contents On the number table screen, perform the following operation: –...

  • Page 100: Data Retention

    • When the defining equation of a composite function (Example: g(x) = f(x) × 2 - x) is registered, and the defining equation of the reference function (Example: f(x) of g(x) = f(x) × 2 - x) is updated (new defining equation registered).

  • Page 101: Simultaneous Linear Equations

    Simultaneous Linear Equations Here, we explain the general procedure for solving a simultaneous equation with an example that solves a simultaneous linear equation with three unknowns. Example 1: 1. Press , select the Equation app icon, and then press • This displays the Equation menu. 2.

  • Page 102: High-Order Equations From 2Nd To 4Th Degree

    • Pressing while the indicator is displayed causes the previously displayed solution to reappear. • Pressing while the final solution is displayed returns to the Coefficient Editor. To return to the Coefficient Editor while any solution is displayed, press • Pressing while the Coefficient Editor is displayed returns to the number of unknowns menu.
  • Page 103 (Input/Output: MathI/MathO) 1. Press , select the Equation app icon, and then press • This displays the Equation menu. 2. Select [Polynomial], and then press • This displays the number of degrees menu. 3. Select [ax +bx+c], and then press •...
  • Page 104 (Displays y-coordinate of minimum of y = x + 2x − 2.) • Pressing while the indicator is displayed causes the previously displayed calculation result to appear again. • Pressing while the final calculation result is displayed returns to the Coefficient Editor. To return to the Coefficient Editor while any calculation result is displayed, press •...
  • Page 105 2. Select [Polynomial] > [ax +bx+c]. • This displays the Coefficient Editor. 3. Use the Coefficient Editor to input coefficient values. 4. Press • This will display a solution. 5. Display another solution and coordinate values. • Pressing while the final calculation result is displayed returns to the Coefficient Editor.

  • Page 106: Using Solver

    Converting a Complex Number Solution to Rectangular or Polar Coordinates You can use the FORMAT menu that appears when you press convert a complex number solution to rectangular coordinate or polar coordinate format. Example 4: To convert the complex number solution displayed in Example 3 (page 103) to polar coordinate format and then to rectangular coordinate format...
  • Page 107 • This displays the Solver equation input screen. 3. Here, store 4 to variable B. • This operation can be executed at any point before step 7 of this procedure. • For details about variables, see "Variables (A, B, C, D, E, F, x, y, z)" (page 36).

  • Page 108: Inequality Calculations

    • The closer the (Left Side) − (Right Side) result is to zero, the higher the accuracy of the solution. 9. Next, press the key that performs the operation you want. To do this: Press this key: Return to the screen in step 6. Store the input expression and return to the screen in step 4.
  • Page 109 2. Select [ax +bx+c], and then press 3. On the menu that appears, select the inequality symbol type and orientation (>, <, ≥, ≤). • Here we want to solve x + 2x - 3 ≥ 0, select [ax +bx+c≥0] and then press 4.

  • Page 110: Complex Number Calculations

    Complex Number Calculations To perform complex number calculations, first launch the Complex app. Press , select the Complex app icon, and then press Inputting Complex Numbers You can use either rectangular coordinates (a+bi) or polar coordinates (r∠θ) to input complex numbers. Example 1: To input 2+3i (i)*...
  • Page 111 Note • When raising a complex number to an integer power using the syntax (a+bi) , the power value can be within the following range: -1 × 10 < n < 1 × 10 Example 4: 2∠45 = √2 + √2i (Angle Unit: Degree, Complex Result: a+bi) –...

  • Page 112: Base-N Calculations

    – [Complex] > [Imaginary Part] Converting a Complex Number Calculation Result to Rectangular or Polar Coordinates You can use the FORMAT menu that appears when you press convert a complex number calculation result to rectangular coordinate or polar coordinate format. Example 9: √2 + √2i = 2∠45, 2∠45 = √2 + √2i (Angle Unit: Degree, Complex Result: a+bi)
  • Page 113 Note • The subscripts appended to the values shown in the examples indicate the base (number mode) of each value. Example: 1 ... Binary 1; 1 ... Hexadecimal 1 Example 1: To calculate 11 1. Use to change the number mode to [Binary]. 2.

  • Page 114: Specifying The Number Mode Of A Particular Input Value

    -2147483648 ≤ x ≤ 2147483647 Decimal Positive: 00000000 ≤ x ≤ 7FFFFFFF Hexadecimal Negative: 80000000 ≤ x ≤ FFFFFFFF • A Math ERROR occurs when a calculation result is outside the applicable range for the number system being used. Specifying the Number Mode of a Particular Input Value You can input a special command immediately before a value to specify the number mode of that value.

  • Page 115: Logical And Negation Operations

    Logical and Negation Operations Logical and negation operations are performed by pressing selecting [Logic Operation], and then selecting the desired command (Neg, Not, and, or, xor, xnor) from the menu that appears. All of the examples below are performed in the binary mode. Example 5: To determine the logical AND of 1010 and 1100...
  • Page 116 2. Press • This displays the matrix variable list screen. • For details about the matrix variable list screen contents, and how to perform matrix variable store, edit, or other operations, see "Matrix Variable List Screen" (page 116). 3. Perform the steps below to store to MatA.

  • Page 117: Matrix Variable List Screen

    ((-))1 ((-))1 (4) Press , or to return to the matrix calculation screen. 5. Input MatA×MatB. – [Matrix] > [MatA] – [Matrix] > [MatB] 6. Press • This displays the MatAns (Matrix Answer Memory) screen with the calculation result. • For details about MatAns, see "Matrix Answer Memory (MatAns)"...
  • Page 118 (2) None Indicates that nothing is stored to the matrix variable. Displaying the matrix variable list screen Depending on the currently displayed screen, perform one of the operations below. • When the matrix calculation screen is displayed: Press • When the Matrix Editor or MatAns screen is displayed: Press , select [Define Matrix], and then press Storing New Data to a Matrix Variable...
  • Page 119 6. Input the elements of the matrix variable. ((-))1 ((-))1 7. Press , or to return to the matrix calculation screen. Note • Matrix variable contents are retained even if you press , change the calculator app, or turn off the calculator. Executing any one of the operations below causes the contents of all matrix variables to be cleared.

  • Page 120: Matrix Answer Memory (Matans)

    • This displays the Matrix Editor with the contents of the copy destination. 3. Press , or to return to the matrix calculation screen. Matrix Answer Memory (MatAns) Whenever the result of a calculation executed in the Matrix app is a matrix, the MatAns screen will appear with the result.
  • Page 121 – [Matrix] > [MatA] – [Matrix] > [Matrix Calc] > [Matrix Squared] – [Matrix] > [MatA] – [Matrix] > [Matrix Calc] > [Matrix Cubed] Example 5: To invert MatA (MatA – [Matrix] > [MatA] – [Matrix] > [Matrix Calc] > [Inverse Matrix] Note •...
  • Page 122 – [Matrix] > [Matrix Calc] > [Determinant] – [Matrix] > [MatA] Note • Determinants can be obtained only for square matrices (same number of rows and columns). Trying to obtain a determinant for a matrix that is not square produces an error.

  • Page 123: Vector Calculations

    Vector Calculations Use the Vector app to perform two-dimensional and three-dimensional vector calculations. General Procedure for Performing a Vector Calculation To perform a vector calculation, use the special vector variables (VctA, VctB, VctC, VctD) as shown in the example below. Example 1: To calculate (1, 2) + (3, 4) •...
  • Page 124 (3) Input the elements of VctA. (4) Press , or to return to the vector calculation screen. 4. Perform the steps below to store (3, 4) to VctB. (1) Press , select [VctB:], and then press (2) Select [Confirm], and then press (3) Input the elements of VctB.

  • Page 125: Vector Variable List Screen

    to a variable. For details about variables, see "Variables (A, B, C, D, E, F, x, y, z)" (page 36). Vector Variable List Screen The vector variable list screen is the entry portal you should use when you want to store a vector into vector variable VctA, VctB, VctC, or VctD, or to edit a previously stored vector.
  • Page 126 4. On the "Vector Dimension?" screen that appears, specify the vector dimension. • To specify three dimensions, perform the steps below. (1) Select [Dimensions] and then press (2) On the menu that appears, select [3 Dimensions] and then press 5. After the dimension specification is the way you want, select [Confirm] and then press •...

  • Page 127: Vector Answer Memory (Vctans)

    Copying Vector Variable (or VctAns) Contents 1. Display the Vector Editor or VctAns screen of the vector variable you want to use as the copy source. • To display the Vector Editor, perform steps 1, 2, and 3 under "Editing Vector Variable Data"...
  • Page 128 – [Vector] > [VctA] – [Vector] > [Vector Calc] > [Dot Product] – [Vector] > [VctB] Note • When calculating a dot product, the dimensions of the two vectors must be the same. Example 4: VctA × VctB (Vector cross product) –...

  • Page 129: Ratio Calculations

    – [Numeric Calc] > [Absolute Value] – [Vector] > [VctC] Ratio Calculations The Ratio app lets you determine the value of X in the ratio expression A : B = X : D (or A : B = C : X) when the values of A, B, C and D are known. General Procedure for Performing a Ratio Calculation Example 1:...

  • Page 130: Calculation Example

    To change the ratio expression type 1. While the Coefficient Editor is displayed, press 2. On the menu that appears, select the ratio expression type you want. Calculation Example Example 2: To calculate X in the ratio 1 : 2 = X : 10 –...
  • Page 131 Dice Roll General Operation Procedure Example: To simulate 100 rolls of two dice. For this example, the Relative Freq screen is used for simulation results, showing the number of occurrences (frequencies) and relative frequencies of the numeric difference (0, 1, 2, 3, 4, 5) between the two dice each roll. 1.
  • Page 132 When there are two dice, the outcome of each roll is displayed along with each roll’s sum and difference. When there are three dice, the outcome of each roll is displayed along with the sum of the roll. Outcome (1 through 6) in the case of one die, sum (2 through 12) or difference (0 through 5) of the outcomes in the case of two dice, and sum (3 through 18) of the outcomes in the case of three dice.
  • Page 133 (1) Each row shows a sequential roll number. For example, 1 is the first roll, 2 is the second roll, and so on. (2) A, B, and C indicate each of the die being used. "Sum" is for the outcome total, and "Diff" is for the difference between the outcomes of two dice.

  • Page 134: Coin Toss

    Note • To have multiple calculators display the same result, make sure that the settings below are identical on all of the calculators. - Number of dice or coins - Number of trials (rolls or tosses) - Same Result setting (#1, #2, or #3) Coin Toss Coin Toss performs a simulation of one, two, or three virtual coin tosses a specified number of times.
  • Page 135 Coins: Select the number of coins as 1, 2, or 3. Attempts: Input the number of coin tosses (number of trials) as a value from 1 to 250. Same Result: This setting is normally Off (initial default setting). For details, see "Same Result Setting"...
  • Page 136 6. To display results using a different format, display the result screen and then press • This returns to the Result Type menu, so you can repeat step 5 of this procedure and change the result display format. 7. If you want to perform a simulation with different settings, press while the Result Type menu is displayed.
  • Page 137 (1) Side: When using only one coin, " " indicates heads while " " indicates tails. When using two or three coins, this column shows the number of heads (0 to 3). (2) Freq: Shows the number of occurrences (frequency) of each toss outcome.

  • Page 138: Technical Information

    Technical Information Errors The calculator will display an error message whenever an error occurs for any reason during a calculation. Displaying the Location of an Error While an error message is displayed, pressing , or returns to the screen that was displayed immediately before the error message appeared.
  • Page 139 • Your input exceeds the allowable input range (particularly when using functions). • The calculation you are performing contains an illegal mathematical operation (such as division by zero). • While using an app that does not support complex numbers or while a screen that does not accept input of complex numbers is displayed, you attempted to execute a calculation that includes a variable where a complex number is stored.
  • Page 140 Action: • Check the dimensions specified for the matrices or vectors to see if they are compatible with the calculation. Variable ERROR (Equation app’s Solver feature only) Cause: • An attempt to execute Solver for an expression input without any variable included.
  • Page 141 Time Out Cause (differential or integration calculation): • The current differential or integration calculation ends without the ending condition being fulfilled. Action: • Try increasing the tol value. Note that this also decreases solution precision. Cause (Distribution app): • The current distribution calculation ends without the ending condition being fulfilled.

  • Page 142: Before Assuming Malfunction Of The Calculator

    Not Defined Cause (f(x) and g(x) feature): • You attempted to calculate f(x) or g(x) with f(x)/g(x) undefined. Action: • Define f(x) or g(x) before calculating f(x)/g(x). Cause (Matrix and Vector apps): • The matrix or vector you are trying to use in a calculation was input without specifying its dimension.
  • Page 143 A low battery is also indicated by a dim display, even if contrast is adjusted, or by failure of figures to appear on the display immediately after you turn on the calculator. If this happens or the above screen appears, replace the battery with a new one.

  • Page 144: Calculation Priority Sequence

    Calculation Priority Sequence The calculator performs calculations according to a calculation priority sequence. • Basically, calculations are performed from left to right. • Expressions within parentheses have the highest priority. • The following shows the priority sequence for each individual command. Parenthetical expressions Functions that have parentheses (sin(, log(, f(, g(, etc., functions that take an argument to the right, functions that...

  • Page 145: Calculation Ranges, Number Of Digits, And Precision

    preceded by a value (Priority 3, above), whose priority is greater than the negative sign, which is a prefix symbol (Priority 5). Example: ((-))2     -2 = -4 ((-))2  (-2) Calculation Ranges, Number of Digits, and Precision The calculation range, number of digits used for internal calculation, and calculation precision depend on the type of calculation you are performing.
  • Page 146 Same as sinx, except when Degree |x| = (2n - 1) × 90. Same as sinx, except when tanx Radian |x| = (2n - 1) × π/2. Same as sinx, except when Gradian |x| = (2n - 1) × 100. x, cos 0 ≤...
  • Page 147 |a|, b, c < 1 × 10 ; 0 ≤ b, c a°b’c” The display seconds value is subject to an error of ±1 at the second decimal place. 0°0’0” ≤ |x| ≤ 9999999°59’59” a°b’c” = x A sexagesimal value outside of the above range is automatically treated as a decimal value.

  • Page 148: Specifications

    Specifications fx-570CW Power Requirements: AAA-size battery R03 × 1 Approximate Battery Life: 2 years (based on one hour of operation per day) Power Consumption: 0.0008 W Operating Temperature: 0°C to 40°C (32°F to 104°F) Dimensions: 13.8 (H) × 77 (W) × 162 (D) mm ”...

  • Page 149: Frequently Asked Questions

    Variables: This memory is helpful when you need to use the same value multiple times in one or more calculations. ■ How can I find a function I was using with an older CASIO calculator model on this calculator? → This calculator’s functions can be accessed from the CATALOG menu that appears when you press .
  • Page 150 ■ Why can’t I input (i) or calculate a complex number? → You cannot use the Calculate app to input i or to perform complex number calculations. Use the Complex app for such calculations. ■ Why does the battery icon ( ) appear right after the calculator is turned on? →...
  • Page 151 SA2207-A © 2022 CASIO COMPUTER CO., LTD.

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