fx-83GT X/fx-85GT X
CLASSWIZ
Scientific Calculator
Before Using the Calculator
Calculation Modes and Calculator Setup
Inputting Expressions and Values
- ▶Inputting a Calculation Expression Using Values
- ▶Inputting an Expression Using Natural Textbook Format
(MathI/MathO or MathI/DecimalO Only) - ▶Displaying Calculation Results in a Form that Includes
√2, π, etc. (Irrational Number Form)
Basic Calculations
- ▶Recurring Decimal Calculations
- ▶Toggling Calculation Results
- ▶Arithmetic Calculations
- ▶Fraction Calculations
- ▶Percent Calculations
- ▶Degree, Minute, Second (Sexagesimal) Calculations
- ▶Multi-Statements
- ▶Using Engineering Notation
- ▶Prime Factorization
- ▶Calculation History and Replay
- ▶Using Memory Functions
Function Calculations
- ▶Pi (π), Natural Logarithm Base e
- ▶Trigonometric Functions, Inverse Trigonometric Functions
- ▶Hyperbolic Functions, Inverse Hyperbolic Functions
- ▶Converting an Input Value to the Calculator’s Default Angle Unit
- ▶Exponential Functions, Logarithmic Functions
- ▶Power Functions and Power Root Functions
- ▶Rectangular-Polar Coordinate Conversion
- ▶Factorial (!)
- ▶Absolute Value Calculation (Abs)
- ▶Random Number (Ran#), Random Integer (RanInt#)
- ▶Permutation (nPr) and Combination (nCr)
- ▶Rounding Function (Rnd)
Using Calculation Modes
- ▶Statistical Calculations
- Inputting Data with Statistics Editor
- Statistical Calculation Screen
- Using the Statistical Menu
- Displaying Statistical Values Based On Input Data
- Displaying Regression Calculation Results Based On
Input Data (Paired-Variable Data Only) - Single-variable Statistical Calculation Commands
- Single-variable Statistical Calculation Examples
- Linear Regression Calculation (y=a+bx) Commands
- Linear Regression Calculation Examples
- Quadratic Regression Calculation (y=a+bx+cx2) Commands
- Quadratic Regression Calculation Examples
- Logarithmic Regression Calculation (y=a+b･ln(x)) Commands
- Logarithmic Regression Calculation Examples
- e Exponential Regression Calculation (y=a･e^(bx)) Commands
- e Exponential Regression Calculation Examples
- ab Exponential Regression Calculation (y=a･b^x) Commands
- ab Exponential Regression Calculation Examples
- Power Regression Calculation (y=a･x^b) Commands
- Power Regression Calculation Examples
- Inverse Regression Calculation (y=a+b/x) Commands
- Inverse Regression Calculation Examples
- ▶Creating a Number Table
- ▶Ratio Calculations
Technical Information
- ▶Errors
- ▶Before Assuming Malfunction of the Calculator...
- ▶Replacing the Battery
- ▶Calculation Priority Sequence
- ▶Stack Limitations
- ▶Calculation Ranges, Number of Digits, and Precision
- ▶Specifications
Frequently Asked Questions
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, press 
or 
return to the calculation screen. The cursor will be positioned at the location where the error occurred, ready for input. Make the necessary corrections to the calculation and execute it again.
Example: When you input 14 ÷ 0 × 2 = by mistake instead of 14 ÷ 10 × 2 =.
- 14
0
2
- (or )
- 1
Clearing the Error Message
While an error message is displayed, press 
to return to the calculation screen. Note that this also clears the calculation that contained the error.
Error Messages
Math ERROR
Cause:
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).
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.
Range ERROR
Cause:
An attempt to generate a number table in the Table Mode whose conditions cause it to exceed the maximum number of allowable rows. The maximum number of rows is 45 when “f(x)” is selected for the setup menu table setting and 30 when “f(x),g(x)” is selected.
Action:
Narrow the table calculation range by changing the Start, End, and Step values, and try again.
