Casio fx-570EX User Manual

Casio fx-570EX User Manual


User's Guide
CASIO Worldwide Education Website
Be sure to keep all user documentation handy for future



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  Summary of Contents for Casio fx-570EX

  • Page 1 User’s Guide CASIO Worldwide Education Website Be sure to keep all user documentation handy for future reference. RJA532432-001V01...
  • Page 2: Table Of Contents

    ■■ Frequently Asked Questions ■■............42 Reference Sheet..................44 • 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 3: About This Manual

    About this Manual • Unless specifically stated, all sample operations in this manual assume that the calculator is in its initial default setup. Use the procedure under “Initializing the Calculator” to return the calculator to its initial default setup. • The contents of this manual are subject to change without notice. •...
  • Page 4: Getting Started

    Getting Started Before using the calculator, slide its hard case downwards to remove it, and then affix the hard case to the back of the calculator as shown in the illustration nearby. Turning Power On and Off Press  to turn on the calculator. Press (OFF) to turn off the calculator.
  • Page 5: Calculation Mode

    • The table below describes some of the typical indicators that appear at the top of the screen. The keypad has been shifted by pressing the  key. The  keypad will unshift and this indicator will disappear when you press a key.
  • Page 6: Input And Output Formats

    For this: Select this icon: General calculations (Calculate) Complex number calculations (Complex) Calculations involving specific number systems (binary, octal, decimal, (Base-N) hexadecimal) Matrix calculations (Matrix) Vector calculations (Vector) Statistical and regression calculations (Statistics) Distribution calculations (Distribution) Spreadsheet calculations (Spreadsheet) Generate a number table based on one (Table) or two functions Equation and function calculations...
  • Page 7: Configuring The Calculator Setup

    Input: Linear* ; Output: Converted to (LineI/DecimalO) decimal value *1 Decimal output is applied when these formats cannot be output for some reason. *2 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.
  • Page 8 Example: 17(≈)* 1.4286 × 10 (Sci 5) Norm: Displays calculation results in exponential format when they fall within the ranges below. > |x|, |x| ≧ 10 > |x|, |x| ≧ 10 ◆ Norm 1 , Norm 2: 10 : 10 5 ×...
  • Page 9: 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 *1 Input of the closing parenthesis is required for sin and other functions that include parentheses.
  • Page 10 Dot product (•) 10 Multiplication (×), division (÷) 11 Addition (+), subtraction (−) 12 and (logical operator) 13 or, xor, xnor (logical operators) Note: When squaring a negative value (such as -2), the value being squared must be enclosed in parentheses (2). Since x a higher priority than the negative sign, inputting 2...
  • Page 11: Toggling Calculation Results

    Using Values and Expressions as Arguments (MathI/ MathO or MathI/DecimalO only) Example: To input 1 + and then change it to 1 + 176(INS)  Pressing (INS) in the above example causes to be the argument of the function input by the next key operation (√). Overwrite Input Mode (LineI/LineO or LineI/DecimalO only) In the overwrite mode, text you input replaces the text at the current cursor...
  • Page 12 23112 136 (LineI/LineO) 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. • Fractions in calculation results are displayed after being reduced to their lowest terms.
  • Page 13: Calculation History And Replay

    Example Input and Calculations Using Engineering Symbols To input 500k 500(Engineer Symbol) 500k (k) To calculate 999k (kilo) + 25k (kilo) = 1.024M (Mega) = 1024k (kilo) = 1024000 999(Engineer Symbol)(k) 1.024M 25(Engineer Symbol)(k) 1024k  1024000  1024k (←) Prime Factorization In the Calculate Mode, a positive integer no more than 10 digits long can be factored to prime factors.
  • Page 14: Using Memory Functions

    Using Memory Functions Answer Memory (Ans) The last calculation result obtained is stored in Ans (answer) memory. To divide the result of 14 × 13 by 7 1413 (Continuing) 7 123 + 456 = 579 123456 789 − 579 = 210 (Continuing) 789...
  • Page 15: Function Calculations

    Clearing the Contents of All Memories Ans memory, independent memory, and variable contents are retained even if you press , change the calculation mode, or turn off the calculator. Perform the procedure below when you want to clear the contents of all memories.
  • Page 16 (LineI/LineO) 5() 32 2 × 3 = 3 2 = 4.242640687... 23 (MathI/MathO) 4.242640687 23 (LineI/LineO) , , : These functions use Gauss-Kronrod methods to perform numerical integration, approximation of the derivative based on central difference method, and calculation of the sum of a specific range of f(x). Input Syntax (1) When MathI/MathO or MathI/DecimalO is selected (2) When LineI/LineO or LineI/DecimalO is selected...
  • Page 17 ()(x)115 (MathI/MathO) ()(x)1 (LineI/LineO) (,) 1(,) 5 Pol, Rec: Pol converts rectangular coordinates to polar coordinates, while Rec converts polar coordinates to rectangular coordinates. • Specify the angle unit before performing calculations. • The calculation result for r and θ and for x and y are each assigned respectively to variables x and y.
  • Page 18: Qr Code Function

    Internet. • Reading a QR code displayed by this calculator with a smart device will cause the smart device to access the CASIO website. Note: A QR code can be displayed by pressing (QR) while the setup screen, a menu screen, an error screen, a calculation result screen in any calculation mode, or a table screen is displayed.
  • Page 19: Complex Number Calculations

    Complex Number Calculations To perform complex number calculations, first enter the Complex Mode. You can use either rectangular coordinates (a+bi) or polar coordinates (r∠θ) to input complex numbers. Complex number calculation results are displayed in accordance with the Complex setting on the setup menu. (1 + i) + (1 −...
  • Page 20: Using Solve

    To store 3A + B and then substitute the following values to perform the calculation: A = 5, B = 10 3(A)(B) 510 → Using SOLVE SOLVE uses Newton’s method to approximate the solution of equations. Note that SOLVE can be used in the Calculate Mode only. SOLVE supports input of equations of the following formats.
  • Page 21: Statistical Calculations

    • SOLVE uses Newton’s method, so even if there are multiple solutions, only one of them will be returned. • Due to limitations in Newton’s method, solutions tend to be difficult to �� y = sin x, �� = �� , ��...
  • Page 22 170173179 666875 Important: All data currently input in the Statistics Editor is deleted whenever you exit the Statistics Mode, switch between the single-variable and a paired-variable statistical calculation type, or change the Statistics setting on the setup menu. To delete a line: In the Statistics Editor, move the cursor to the line that you want to delete and then press .
  • Page 23 Regression Coefficients: a, b / Correlation Coefficient: r / Estimated Values: ��, �� (Regression)  to  Regression Coefficients for Quadratic Regression: a, b, c / Estimated Values: �� , �� , �� (Regression)  to  • ��, �� , ��...
  • Page 24: Base-N Calculations

    P, Q, R: These functions take the argument t and determine a probability of standard normal distribution as illustrated nearby. t: This function is preceded by the argument x. It calculates the standard variate for data value x using the mean value ( �� − ) and population standard deviation (σ...
  • Page 25: Equation Calculations

     (b) 10(o) 10 Converting a Calculation Result to another Type of Value You can use any one of the following key operations to convert the currently displayed calculation result to another type of value: (DEC), (HEX), (BIN), (OCT). To calculate 15 ×...
  • Page 26: Matrix Calculations

    • This will display a solution. Each press of  will display another solution. Pressing  while the final solution is displayed will return to the Coefficient Editor. • A message appears to let you know when there is no solution or when there are infinite solutions.
  • Page 27 4. Perform the following key operation: (Define Matrix)(MatB)(2 rows)(2 columns). 5. Input the elements of MatB: 2112. 6. Press  to advance to the calculation screen, and perform the calculation (MatA × MatB): (MatA)(MatB). • This will display the MatAns (Matrix Answer Memory) screen with the calculation results.
  • Page 28: Creating A Number Table

    (Transposition) MatB  To invert, square, and cube MatA (MatA , MatA , MatA Note: You cannot use  for this input. Use  to input “ ”,  to specify squaring, and (x ) to specify cubing.  MatA  ...
  • Page 29: Vector Calculations

    pressing  automatically inputs the value equal to the value of the cell above less the step value. The f(x) and g(x) values in the same line are also updated accordingly. Note • After pressing  in step 4 above, proceeding from step 5 onwards without inputting anything for g(x) will generate a number table for f(x) only.
  • Page 30: Inequality Calculations

    3. Use the Vector Editor that appears to input the elements of the vector. To edit the elements of a vector variable Press (Edit Vector), and then, on the menu that appears, select the vector variable you want to edit. To copy vector variable (or VctAns) contents 1.
  • Page 31: Ratio Calculations

    • To return to the Coefficient Editor while the solutions are displayed, press . To change the Inequality Type: Pressing (Polynomial) displays a dialog box that you can use to select an inequality degree. Changing the degree of an inequality causes the values of all Coefficient Editor coefficients to become zero.
  • Page 32: Distribution Calculations

    Distribution Calculations You can use the procedures below to perform seven different types of distribution calculations. 1. Press , select the Distribution Mode icon, and then press . 2. On the menu that appears, select a distribution calculation type. To select this calculation type: Press this key: (Normal PD) Normal probability density...
  • Page 33 List Screen You can input up to 45 data samples for each variable. Calculation results are also displayed on the List Screen. (1) Distribution calculation type (2) Value at current cursor position (3) Data (x) (4) Calculation results (P) To edit data: Move the cursor to the cell that contains the data you want to edit, input the new data, and then press .
  • Page 34: Using Spreadsheet

    variables N and p remain the same. This means you can repeat a calculation changing only one specific value. • On the List Screen, you can assign the value in a cell to a variable. Move the cell cursor to cell that contains the value you want to assign, press , and then press the key that corresponds to the desired variable name.
  • Page 35 To edit existing cell data 1. Move the cell cursor to the cell whose contents you want to edit, and then press (Edit Cell). • Cell contents in the edit box will change from align right to align left. A text cursor will appear in the edit box so you can edit its contents.
  • Page 36 • Pasting data simultaneously deletes the data from the cell where you performed the cut operation, and automatically cancels paste standby. Note: In the case of a cut and paste operation, cell references do not change when pasted, regardless of whether they are relative or absolute. To copy and paste spreadsheet data 1.
  • Page 37 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. Note: If the input formula or constant includes a relative reference, the relative reference will be input in accordance with the upper left cell of the specified range.
  • Page 38: Scientific Constants

    Scientific Constants Your calculator comes with 47 built-in scientific constants. Example: To input the scientific constant c (speed of light in a vacuum), and display its value 1. Press (CONST) to display a menu of scientific constant categories. 2. Press (Universal) to display a menu of scientific constants in the Universal category.
  • Page 39 Error Messages Math ERROR • The intermediate or final result of the calculation you are performing exceeds the allowable calculation range. • 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).
  • Page 40: Before Assuming Malfunction Of The Calculator

    • The current differential or integration calculation ends without the ending condition being fulfilled. → Try increasing the tol value. Note that this also decreases solution precision. Circular ERROR (Spreadsheet Mode only) • There is a circular reference (such as “=A1” in cell A1) in the spreadsheet.
  • Page 41: Technical Information

    1. Press (OFF) to turn off the calculator. • To ensure that you do not accidentally turn on power while replacing the battery, slide the hard case onto the front of the calculator. 2. As shown in the illustration, remove the cover, remove the battery, and then load a new battery with its plus (+) and minus (−) ends facing...
  • Page 42 0 ≦ |x| ≦ 9.999999999 × 10 tanhx 0 ≦ |x| ≦ 9.999999999 × 10 tanh 0 < x ≦ 9.999999999 × 10 logx, lnx ≦ x ≦ 99.99999999 -9.999999999 × 10 ≦ x ≦ 230.2585092 -9.999999999 × 10 0 ≦ x < 1 × 10 ��...
  • Page 43: Frequently Asked Questions

    ” (H) × 3” (W) × 6 ” (D) Approximate Weight: fx-570EX: 100 g (3.5 oz) including the battery fx-991EX: 90 g (3.2 oz) including the battery ■■ Frequently Asked Questions ■■ How can I change a fraction form result produced by a division operation to decimal form? →...
  • Page 44 When I execute a function calculation, why do I get a calculation result that is completely different from older CASIO calculator models? → With a Natural Textbook Display model, the argument of a function that uses parentheses must be followed by a closing parenthesis. Failing to press ...
  • Page 45: Reference Sheet

    Reference Sheet Scientific Constants (CONST) (Universal) : c : h : : ε : μ : Z : l : t : G (Electromagnetic) : μ : μ : e : : G : K Φ : R (Atomic&Nuclear) : m : m : m : m...
  • Page 46 CASIO COMPUTER CO., LTD. 6-2, Hon-machi 1-chome Shibuya-ku, Tokyo 151-8543, Japan Responsible within the European Union: CASIO EUROPE GmbH Casio-Platz 1 22848 Norderstedt, Germany This mark applies in EU countries only. SA1412-A Printed in China © 2015 CASIO COMPUTER CO., LTD.

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