CASIO 991EX
advance scientific calculator
The fx-991EX is the most advanced scientific calculator available. Advanced functions include calculus, probability distributions, equation solvers, matrices and vectors, and spreadsheets. It uses ClassWiz technology for intuitive menu-driven operation and easy access to results. The fx-991EX offers a high-resolution LC display with 192×63 pixels, four times higher than previous calculators, a faster processor and double the memory.
Features
What you can do with a 991EX
Evaluate calculus
Evaluate first derivatives and definite integrals for any single-variable function.
Calculate statistics such as mean and quartiles from lists. Calculate paired-variable regression.
You can solve it!
Solve simultaneous linear equations
Solve linear equations in up to 4 unknowns. Answers are given as fractions where appropriate.
Solve quadratic equations
Solve quadratic, cubic and quartic equations. Answers are given in surd form where appropriate.
Calculate probability distributions
Calculate probabilities for Normal, Binomial and Poisson distributions.