Selection of the desired function is quick and easy. Input and display fractions, powers, logarithms, roots, and other mathematical formulas and symbols just as they appear in textbooks. Variables and statistical calculation results stored in memory can be displayed in lists.

The Casio FX-991ES Plus is Casio's most advanced scientific calculator with 417 mathematical functions. Recommended for Advanced GCSE, A/AS Levels and Highers. Dual powered (solar with battery back-up).

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Input and display fractions, powers, logarithms, roots, and other mathematical formulas and symbols just as they appear in textbooks. A wide range of essential functions are effective for education and available to support student's learning. Useful for learning statistics.

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Degree, Minute, Secound (Sexagesimal) Calculations. Reciprocal Calculation. Percent Calculation (scientific calculator function)

Oct 3, 2022 · The Casio fx-991ex succeeds the fx-991es (functionally identical to the fx-570es and fx-115es). Both are nonprogrammable nongraphing scientific calculators, with natural multi-line input and output.

With a high-resolution LCD screen, the fx-991EX allows for more information to be displayed for applications like spreadsheets and 4x4 matrix calculations. This calculator has a comprehensive set of advanced calculations for integration and differential calculus along with vector and inequality calculations.