Features
Fraction calculations
Combination and permutation
Statistics (STAT-data editor, Standard deviation, Regression analysis)
9 variable memories
Comes with a slide-on hard case
Specifications
Number of Functions: 401
10 + 2 digits
10-digit mantissa + 2-digit exponential display.
Dot-matrix display
A high-resolution screen provides beautiful looking graphs every time.
Regular percent
Regular percentage calculations.
Multi-replay
Quick and easy recall of previously executed formulas for editing and re-execution.
Solar & Battery
Solar-powered when light is sufficient, battery powered when light is insufficient.
Plastic keys
Designed and engineered for easy operation.
S-V.P.A.M. (Super Visually Perfect Algebraic Method)
All the features of the existing V.P.A.M. series plus a new 2-line display and a useful Replay function. All this helps to make mathematics easier to use and easier to understand than ever before.
STAT-data editor
Back-step viewing and editing of input data.
https://www.casio.com/intl/scientific-calculators/product.FX-991MS-2/
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