Casio fx-991ES PLUS - Scientific Calculator

The Casio fx-991ES PLUS is a versatile scientific calculator. It's known for its extensive range of functions suitable for both students and professionals, including complex number calculations, statistics, and various mathematical and scientific formulas. 

New functions

• New equation mode
• Random integers

Standard functions

• Fraction calculations
• Combination and permutation
• Statistics (List-based STAT data editor, standard deviation, regression analysis)
• 9 variables
• Table function
• Comes with new slide-on hard case

fx-82ES PLUS/85ES PLUS/350ES PLUS functions, in addition to:

• Equation calculations
• Integration/differential calculations
• Matrix calculations
• Vector calculations
• Complex number calculations
• CALC function
• SOLVE function
• Base- n calculation

Key Features

• Advanced Functions: The fx-991ES PLUS offers a wide range of mathematical functions, including trigonometric, logarithmic, exponential, statistical, and complex number calculations, making it suitable for various academic and professional disciplines.
• Natural Display: With its Natural Textbook Display, this calculator allows users to input and view mathematical expressions just as they appear in textbooks, enhancing comprehension and reducing errors.
• Multi-Replay Function: The Multi-Replay feature enables users to recall and edit previous calculations quickly, facilitating problem-solving and learning processes.
• Solving Equations: The fx-991ES PLUS can solve equations, inequalities, and systems of equations, helping users efficiently tackle complex mathematical problems.
• Solar Power: This calculator is powered by both solar energy and battery, ensuring reliable operation in various lighting conditions and environments.