Casio fx-82CW User Manual
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Casio fx-82CW User Manual

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fx-82CW
fx-85CW
fx-350CW
User's Guide
CASIO Worldwide Education Website
https://edu.casio.com
Manuals are available in multi languages at
https://world.casio.com/manual/calc/
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Summary of Contents for Casio fx-82CW

  • 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 ........... 4 Read This First ..................4 About This Manual ..................4 Key Operations ....................4 Menu Operations ....................5 Key and Key ..................6 Examples ....................... 6 Initializing the Calculator ................. 6 Calculator "Get Started" Screen ............. 6 Precautions .....................
  • Page 3 Pi, Natural Logarithm Base e ..............31 Pi ........................31 Natural Logarithm Base e ................31 Calculation History and Replay .............31 Calculation History ..................31 Replay ......................32 Using Memory Functions ..............32 Answer Memory (Ans) ..................32 Variables (A, B, C, D, E, F, x, y, z) ..............33 Clearing the Contents of All Memories ............35 Changing Calculation Result Format ........
  • Page 4 Registering and Using Defining Equations for f(x) and g(x) ....................51 Registering and Using Defining Equations for f(x) and g(x) ....51 Registering a Defining Equation ..............51 Performing a Calculation by Assigning a Value to the Registered Defining Equation ....................... 52 Registering a Composite Function ...............

  • Page 5: 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 6: Menu Operations

    * Refer to "Key Markings" (page 12) 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 7: 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 8: Precautions

    17). 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 9 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 10: Handling Precautions

    • Do not subject a battery to excessively low barometric pressure during use, storage, or transport. Handling Precautions • fx-82CW/fx-350CW: Even if the calculator is operating normally, replace the battery at least once every two years (R03). fx-85CW: Even if the calculator is operating normally, replace the battery at least once every two years (LR44).
  • Page 11 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 12: 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 13: 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 16). Adjusting Display Contrast 1.

  • Page 14: 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 15 Selecting a Menu Item To select a menu item, use the cursor keys ( ) to highlight it and then press . Note that are used only when there are multiple menu item columns. Navigating Between Menu Hierarchies The " " indicator to the right of a menu item means that there are lower hierarchy levels under that item.
  • Page 16 - The menu item you selected has more settings to configure, a screen for selecting the menu item setting will appear. In this case, proceed to step 2. 2. On the setting screen, highlight the setting you want and then press •...

  • Page 17: 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 18: Using The Settings Menu

    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 calculation results.

  • Page 19: Items And Available Setting Options

    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. • See "Items and Available Setting Options"...
  • Page 20 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. Same output format as that for models without Natural Textbook Display (S-V.P.A.M. models, etc.) Input/output format display examples: MathI/MathO (initial default setting) MathI/DecimalO...
  • Page 21 Sci: The value you specify (from 1 to 10) controls the number of significant digits for displayed calculation results. Calculation results are rounded off to the specified digit before being displayed. Example: 1 ÷ 6 (Sci 3) Norm: Displays calculation results in exponential format when they fall ◆...
  • Page 22 as the decimal mark, the separator for multiple results is a comma (,). When comma is selected, the separator is a semicolon (;). Calc Settings > Digit Separator ◆ On; Off Specifies whether or not a separator character should be used in calculation results.

  • Page 23: Using The Catalog Menu

    Reset > Initialize All "Initializing the Calculator" (page Get Started "Calculator "Get Started" Screen" (page To initialize calculator settings Important! • The procedure below initializes all calculator settings, except for Contrast and Auto Power Off. Also clears all data except for variable memory and Ans data. 1.

  • Page 24: Using The Tools Menu

    Using the TOOLS Menu The TOOLS menu that appears when you press includes menu items for performing functions specific to each calculator app and for configuring settings. Example: TOOLS menu for the Calculate app Examples: TOOLS menu for the Table app Note •...

  • Page 25: 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 26: 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 27: 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), 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 28: 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 29 (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 30: 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 31 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 32: 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 33: 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 34: 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 35 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 36: 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 37: 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 38: Conversion Sample Operation

    Conversion Sample Operation Example: 3 ÷ 2 = = 1.5 = 1 In this example, we will convert a calculation result displayed as an improper fraction to a decimal value and then to a mixed fraction. Finally, we will cancel the conversion and go back to the original calculation result. (Input/Output: MathI/MathO, Fraction Result: Improp Fraction) 1.

  • Page 39: Prime Factorization

    You can use the operation below to convert a calculation result to the Standard or Decimal format. Example: π ÷ 6 = π = 0.5235987756 (Input/Output: MathI/MathO) (π) (Select [Decimal].) (Converts to a decimal value.) (Coverts to Standard format.) Important! •...

  • Page 40: Improper Fraction And Mixed Fraction Conversion

    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 41: Engineering Notation

    – [Mixed Fraction] Engineering Notation You can convert the exponent part of a displayed calculation result value to a power of ten that is a multiple of 3, and displays the result. Example: Transform the value 1234 to engineering notation, shifting the decimal mark to the right, and then to the left.

  • Page 42: Sexagesimal Conversion (Degree, Minute, Second Calculations)

    Note • Normal calculations are not possible while in the ENG Conversion Mode. To start a new calculation, exit the ENG Conversion Mode. Sexagesimal Conversion (Degree, Minute, Second Calculations) You can convert a decimal value calculation result to a sexagesimal value. Converting a Decimal Value Calculation Result to a Sexagesimal Value Example:...
  • Page 43 (Return to sexagesimal display.) – [Sexagesimal]...

  • Page 44: 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 45: Natural Logarithm

    for Input/Output on the SETTINGS menu. In this case, you must input a value for the base. Example 3: 16 = 4 Natural Logarithm (ln) or – [Func Analysis] > [Natural Logarithm] to input "ln". Example: ln 90 (= log 90) = 4.49980967 (ln)90 Probability...

  • Page 46: Factorial(!)

    Factorial(!) This function obtains the factorials of a value that is zero or a positive integer. Example: (5 + 3)! = 40320 – [Probability] > [Factorial(!)] Permutation(P), Combination(C) Permutation (nPr) and combination (nCr) functions. Example: To determine the number of permutations and combinations possible when selecting four people from a group of 10 Permutations: –...

  • Page 47: Numeric Calculations

    Example: To generate random integers in the range of 1 to 6 – [Probability] > [Random Integer] (,)6 (The result differs with each execution.) Numeric Calculations This section explains commands and functions that you can input after performing the operation: –...

  • Page 48: Angle Unit, Polar/Rectangular Coordinate, Sexagesimal

    – [Numeric Calc] > [Round Off] 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.

  • Page 49: Degrees, Minutes, Seconds

    Note • Pol( and Rec( can be used on the calculation screen of the calculator apps below. • Calculate, Statistics 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)

  • Page 50: Trigonometric Functions

    Trigonometric Functions Trigonometric functions can be input using the keys or menu items below. 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.
  • Page 51 √ ( ((-)) Reciprocal Square Minus sign...

  • Page 52: 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 53: Performing A Calculation By Assigning A Value To The Registered Defining Equation

    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) 1. Press , and then select [f(x)]. •...

  • Page 54: Data Retention

    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). Data Retention Performing any one of the operations below causes the defining equations registered to f(x) and g(x) to be deleted.

  • Page 55: 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 56: 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 57: 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 58: 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 60).
  • Page 59 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 60 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 61: Displaying Statistical Calculation Results

    Example 2: To sort the data input in Example 1 (page 58) 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 62 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 67).
  • Page 63 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 64 Example 5: To use the paired-variable data input in Example 4 (page 61) 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 65: 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 Power Regression...
  • Page 66 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 67 – [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 68 – [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 69 min(x)* ..minimum value * ..first quartile Med* ..median * ..third quartile max(x)* ..maximum value – [Statistics] > [Min/Max] (Paired-Variable Data Only) min(x), min(y) ..minimum value max(x), max(y) ..maximum value – [Statistics] > [Regression] (Paired-Variable Data Only) For quadratic regression a, b, c ..

  • Page 70: Statistical Calculation Formula

    1. Perform steps 1 through 5 of the procedure under Example 4 (page 61). 2. Select [Statistics Calc], and then press • This displays the regression type menu. 3. Select [y=a+bx], and then press 4. Input the x-value (5.5), and then input "y ˆ ", which is the function to determine the estimated value of y.
  • Page 71 Regression Calculation Formula Linear Regression (y = a + bx) Quadratic Regression (y = a + bx + cx Logarithmic Regression (y = a + b･ln(x))
  • Page 72 e Exponential Regression (y = a･e^(bx)) ab Exponential Regression (y = a･b^x) Power Regression (y = a･x^b) Inverse Regression (y = a + b/x)

  • Page 73: Creating A Number Table

    Creating a Number Table You can use the Table app to create a number table based on the defining equations registered for functions f(x) and g(x). General Procedure for Creating a Number Table Example : To generate a number table for the functions f(x) = x g(x) = x for the range -1 ≤...

  • Page 74: Maximum Number Of Rows In A Number Table According To Table Type

    (Screen immediately before you pressed 4. Register a defining equation for g(x). – [Define f(x)/g(x)] > [Define g(x)] (Screen immediately before you pressed • You can also use to register a defining expression. For more information, see "Defining Equation Registration" (page 74).

  • Page 75: Defining Equation Registration

    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. Up to 45 rows are supported for the "f(x)" or "g(x)" setting, while 30 rows are supported for the "f(x)/g(x)"...

  • Page 76: F(X) And G(X) Update Timing

    To change the value input in a cell in column x You can change the value in the currently highlighted x cell. Changing the x value causes the f(x) and g(x) values in the same row to be updated accordingly. To enter a value into the highlighted x-column cell using: {value of the cell above} +/- {step value} If there is value in the x cell above the currently highlighted x cell, pressing...

  • Page 77: Using Math Box

    ② Pressing ③ Changing the Input/Output setting with the SETTINGS menu. ④ Changing the Table Type setting with the TOOLS menu. The table below shows which data is discarded and which data is retained. ① ② ③ ④ Operation Data, Setting Number table data (x-, f(x)-, g(x)-columns) Discarded Discarded...
  • Page 78 of occurrences (frequencies) and relative frequencies of the numeric difference (0, 1, 2, 3, 4, 5) between the two dice each roll. 1. Press , select the Math Box app icon, and then press • This displays the Math Box menu. 2.
  • Page 79 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. 5.
  • Page 80 (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 81: 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 82 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 83 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 84 (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 85: 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 86 • 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). Action: • Check the input values, reduce the number of digits, and try again. •...

  • Page 87: Before Assuming Malfunction Of The Calculator

    Circular ERROR (f(x) and g(x) feature only) Cause: • Circular reference is occurring in a registered composite function ("Registering a Composite Function" (page 52)). Action: • Do not have g(x) input into f(x), and f(x) input into g(x) at the same time.
  • Page 88 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 89: 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 90: Calculation Ranges, Number Of Digits, And Precision

    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. Calculation Range and Precision Calculation Range ±1 × 10 to ±9.999999999 × 10 or 0 Number of Digits for 23 digits...
  • Page 91 sinh 0 ≤ |x| ≤ 4.999999999 × 10 cosh 1 ≤ x ≤ 4.999999999 × 10 tanhx 0 ≤ |x| ≤ 9.999999999 × 10 tanh 0 ≤ |x| ≤ 9.999999999 × 10 logx, lnx 0 < x ≤ 9.999999999 × 10 -9.999999999 ×...

  • Page 92: Specifications

    π form. It also can cause calculation results that should be in decimal form to appear in π form. Specifications fx-82CW/fx-350CW 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...
  • Page 93 Approximate Weight: 100 g (3.5 oz) including the battery fx-85CW Power Requirements: Built-in solar cell; button battery LR44 × 1 Approximate Battery Life: 2 years (based on one hour of operation per day) Operating Temperature: 0°C to 40°C (32°F to 104°F) Dimensions: 10.7 (H) ×...

  • Page 94: 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 95 ■ Why does the battery icon ( ) appear right after the calculator is turned on? → The battery icon indicates that battery power is low. If you see this icon, replace the battery as soon as possible. For details about battery replacement, see "Replacing the Battery"...
  • Page 96 SA2207-A © 2022 CASIO COMPUTER CO., LTD.

This manual is also suitable for:

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