## fx-570ES PLUS

fx-991ES PLUS

(2nd edition / NATURAL-V.P.A.M.)

## Before Using the Calculator

## Calculation Modes and Calculator Setup

## Inputting Expressions and Values

- ▶Basic Input Rules
- ▶Inputting with Natural Display
- ▶√ Form Calculation Range
- ▶Using Values and Expressions as Arguments (Natural Display only)
- ▶Overwrite Input Mode (Linear Display only)
- ▶Correcting and Clearing an Expression

## Basic Calculations

- ▶Toggling Calculation Results
- ▶Fraction Calculations
- ▶Percent Calculations
- ▶Degree, Minute, Second (Sexagesimal) Calculations
- ▶Multi-Statements
- ▶Using Engineering Notation
- ▶Calculation History and Replay
- ▶Using Memory Functions

## Function Calculations

- ▶Pi (
*π*), Natural Logarithm Base*e* - ▶Trigonometric Functions
- ▶Hyperbolic Functions
- ▶Angle Unit Conversion
- ▶Exponential Functions
- ▶Logarithmic Functions
- ▶Power Functions and Power Root Functions
- ▶Integration Calculations
- ▶Differential Calculations
- ▶Σ Calculations
- ▶Rectangular-Polar Coordinate Conversion
- ▶Factorial Function (!)
- ▶Absolute Value Function (Abs)
- ▶Random Number (Ran#)
- ▶Random Integer (RanInt#)
- ▶Permutation (
*n*P*r*) and Combination (*n*C*r*) - ▶Rounding Function (Rnd)
- ▶Using CALC
- ▶Using SOLVE
- ▶Scientific Constants
- ▶Metric Conversion

## Using Calculation Modes

- ▶Complex Number Calculations (CMPLX)
- ▶Statistical Calculations (STAT)
- ▶Base-
*n*Calculations (BASE-N) - ▶Equation Calculations (EQN)
- ▶Matrix Calculations (MATRIX)
- ▶Creating a Numerical Table from a Function (TABLE)
- ▶Vector Calculations (VECTOR)

## Technical Information

- ▶Errors
- ▶Before Assuming Malfunction of the Calculator...
- ▶Replacing the Battery
- ▶Calculation Priority Sequence
- ▶Calculation Ranges, Number of Digits, and Precision
- ▶Specifications
- ▶Verifying the Authenticity of Your Calculator

## Frequently Asked Questions

**Verifying the Authenticity of Your Calculator**

Use the steps below to verify that your calculator is a genuine CASIO calculator.

1. Press .

2. Press .

This displays the information below.

- Calculator ID number (24-character string)

- QR Code for accessing the Worldwide Education Service

(https://wes.casio.com/calc/)

3. Access the above site.

4. Follow the instructions on the display to verify the authenticity of your calculator.

Press to return to the mode menu.