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General| Model | fx-991AR X |
|---|---|
| Category | Scientific Calculator |
| Type | Non-programmable |
| Number of Functions | 552 |
| Memory | 9 variables |
| Manufacturer | Casio |
| Power Source | Solar and Battery |
Selecting the appropriate mode for different types of calculations.
Order of operations for calculations on the calculator.
How to input formulas using natural textbook format.
Assigning values to variables for calculations.
Performing trigonometric and inverse trigonometric calculations.
Performing logarithmic calculations with base 10 and base e.
Performing numerical integration and derivative calculations.
Steps to display a QR code for a calculation result.
Examples of calculations involving complex numbers.
Entering data for statistical analysis using the editor.
Recalling statistical values like mean, variance.
Displaying regression coefficients and formulas.
Recalling statistical variables and using them in calculations.
Performing bitwise logical and negation operations.
Entering constants and formulas into spreadsheet cells.
Explains common error messages and their causes.
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