Casio fx-991ES Plus is a non-programmable scientific calculator with 417 functions. It has Natural Textbook Display so that you can type and see algebraic functions the way it is written in your books. Calculator has dual power source: Battery & Solar.
It can solve advance functions like Simultaneous Equations, Matrix, Vector, Polynomial, Integration, Differentiation etc.
From the manufacturer
Non-Programmable Scientific Calculator – CASIO fx-991ES Plus
- Dot Matrix Display: Dot-Matrix High-Resolution Display for easy viewing of long expressions.
- Natural Textbook Display: Input and display functions as they are in book for easy understanding.
- Plastic keys: For easy and fast typing
Casio fx-991ES Plus is a non-programmable scientific calculator with 417 functions. This calculator comes with dual power: Battery and Solar for long usage without need of battery replacement.
Calculator has dot-matrix display with Natural Textbook Display feature for easy viewing and entering of long algebraic functions and equations. Calculator can perform Trigonometrical, Statistical, Integral, Differential, Permutation, Combination, Matrices, Vector calculations, and many more. Its keys are made of plastic for easy and fast usage. A suitable calculator for Engineering, Polytechnic, University and College students.
Number of Functions : 417
417 Functions for easy and fast Calculations for all your mathematical and engineering problems.
Natural textbook display
Input and display fractions, powers, logarithms, roots, and other mathematical formulas and symbol just as they appear in textbooks.
Switch to Complex Mode and easily do calculations related to complex numbers
Matrix & Vector Calculation
Solve up to 3 by 3 matrix and 3-dimensional Vector problems
Statistics & Regression
Solve statistical and regression problem using list-based data.
Single Key to change mode for Complex, Polynomial, Statistics, Matrix, Vector etc calculation.
Shift/Alpha keys for easy operation
Some functions are written in Yellow and Red colors. Use Shift key to execute yellow colored functions and Alpha key for red colored functions.
Dot matrix display
High resolution dot matrix display increases the amount of information that can be displayed and so makes it easier to view numerical formulas and symbols.