Intuitive, easy-to-learn icon display
*The photo shows the fx-991AR X.
The use of icons on the menu screen improves viewability. Selection of the desired function is quick and easy.
Natural Textbook Display
Input and display fractions, powers, logarithms, roots, and other mathematical formulas and symbols just as they appear in textbooks.
List display function for thorough, speedy learning
Variables and statistical calculation results stored in memory can be displayed in lists. There’s no need to recall and confirm individual values as with previous models.
Easy-to-understand Arabic and English messages and interactive format
Nearly all Arabic and English words are displayed on the screen in unabbreviated form. Interactive menu display realizes more intuitive operation.
High computational competence for performing even advanced mathematics
ClassWiz contains calculation functions that support even advanced mathematical operations, including spreadsheet calculations, 4 × 4 matrix calculations, calculation of simultaneous equations with four unknowns and quartic equations.
Online Visualization Service Using QR Code
Generate QR codes of equations input into the calculator by a simple operation. Graphs and other graphics can be displayed on smartphone or tablet screens.
A comprehensive set of advanced functions unique to CASIO scientific calculators
Useful for learning statistics. Up to 5 columns × 45 rows (maximum of 170 data items)
Perform calculations with matrices of up to 4 rows and 4 columns.
Perform calculations using up to four third-order vectors stored in memory.
Formulas are automatically wrapped to multiple lines.
*In linear input mode
Perform integration calculations in advanced mathematics.
Perform differential calculations in advanced mathematics.
Calculation of simultaneous equations in 2 to 4 unknowns and high-degree equations of second to fourth degree
Solve second-degree to fourth-degree inequalities.
Perform ratio calculations such as A:B=X:D.
Select units from the Metric Conversion Command List.
Select scientific constants from the Scientific Constant Table.
One-touch list display
Displays six rows at once.
Separation every three digits makes even large numbers easy to read.
Perform engineering calculations that include symbols such as k, M, m, and n.
Find the sum of all the terms of a given numerical sequence.