CASIO fx-991ES PLUS Second Edition Scientific Calculator

Redesigned ES PLUS series calculators

featuring easy-to-understand

Natural Textbook Display

Optimal education tools realized through a design that emphasizes comfort in the hand, legibility, and usability through the pursuit of simplicity

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