Casio Fx-991es Plus 1st Edition

Two way power

417 Functions

Full Dot Display

Plastic Keys

Integration / Differential

Equation calculation

Matrix calculations / Vector calculations

Complex number calculation

CALC function / SOLVE function

Base-n calculation

Fraction calculation

Combination and Permutation

Logarithm log

List-based STAT data editor

Standard deviation

Paired-variable statistics regression analysis

Table function

40 scientific constants

40 metric conversions (20 conversion pairs)

9 variable memories

Comes with new slide on hard case