Casio FX-82ES PLUS User Manual

• 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.
• When using independent memory or a variable as the argument of a
function, make sure that the memory or variable value is within the
allowable range for the function.
Stack ERROR
Cause:
• The calculation you are performing has caused the capacity of the
numeric stack or the command stack to be exceeded.
Action:
• Simplify the calculation expression so it does not exceed the capacity
of the stack.
• Try splitting the calculation into two or more parts.
Syntax ERROR
Cause:
• There is a problem with the format of the calculation you are
performing.
Action:
• Make necessary corrections.
Argument ERROR
Cause:
• There is a problem with the argument of the calculation you are
performing.
Action:
• Make necessary corrections.
Insufficient MEM Error
Cause:
• The configuration of TABLE Mode parameters caused more than 30
X-values to be generated for a table.
54

Casio FX-82ES PLUS Specifications

General

Type	Scientific
Cover	-
Form factor	Pocket
Control type	Buttons
Product color	Black
Operation	256
Digits	12 digits
Display tilting	No
Display size (HxV)	31 x 96 mm
Display number of lines	- lines
Battery type	AAA
Power source	Battery
Auto power off	Yes
Battery life (max)	17000 h

Weight and Dimensions

Depth	161 mm
Width	80 mm
Height	13.8 mm
Weight	110 g

Summary

Calculator Basics and Setup

Initializing Calculator Settings

Procedure to restore calculator to factory default settings, clearing all data.

Precautions and Safety Guidelines

Essential safety warnings and handling advice before using the calculator.

Getting Started with Your Calculator

Handling Precautions and Maintenance

Guidelines for safe handling, battery life, and cleaning.

Calculator Modes and Setup Configuration

Selecting Calculation Modes

Guide to choosing the correct mode (COMP, STAT, TABLE, EQN, INEQ, RATIO) for operations.

Configuring Display and Number Formats

Setting up display formats, angle units, and number formats.

Specifying Number Display Formats

Setting decimal places, significant digits, and exponential notation.

Adjusting Display Contrast and Initializing Settings

Adjusting screen contrast and resetting all calculator settings.

Inputting Expressions and Values

Basic Input Rules and Syntax

Fundamental rules for entering calculations, including order of operations.

Natural Display Input Method

How to input and display fractions and functions naturally.

Overwrite Input Mode and Expression Editing

Using overwrite mode and methods for editing/clearing expressions.

Performing Basic Calculations

Inputting and Displaying Fractions

Procedures for fraction input in Natural and Linear Display modes.

Using Answer Memory (Ans) and Variables

Independent Memory (M) and Clearing All Memory

Advanced Function Calculations

Pi (π), e, Trigonometric, and Hyperbolic Functions

Angle Unit Conversion, Exponential, and Logarithmic Functions

Power and Root Function Calculations

Statistical Analysis Tools

Entering STAT Mode and Selecting Calculation Types

Steps to enter STAT mode and choose analysis types.

Inputting Data for Statistical Analysis

Using the Statistics Editor to enter data points.

Using the Statistics Menu and Sub-menus

STAT Mode Regression Sub-menu Commands

Quadratic Regression Commands and Estimated Values

Calculating Estimated Values from Regression Analysis

Equation Solving (fx-95ES PLUS)

EQN Mode Setup and Equation Types

Selecting equation types (simultaneous linear, quadratic, cubic).

EQN Mode Coefficient Editor and Solution Display

Creating Numerical Tables with TABLE Mode

Generating tables of f(x) values for a range of x.

TABLE Mode Input Prompts and Table Generation

Inequality Solving (fx-95ES PLUS)

INEQ Mode Setup and Inequality Types

Solving quadratic or cubic inequalities.

INEQ Mode Coefficient Editor and Solution Display

Ratio Calculations (fx-95ES PLUS)

RATIO Mode Setup and Expression Types

Selecting ratio expression types and inputting coefficients.

Technical Information and Troubleshooting

Understanding and Handling Calculator Errors

Identifying, locating, and clearing error messages.

Common Error Messages and Causes

Details on Math, Stack, Syntax, Argument, and MEM errors.

Troubleshooting Calculator Issues

Steps to take when encountering errors or unexpected results.

Replacing the Calculator Battery