CASIO SCIENTIFIC CALCULATOR FX-991ES PLUS

• Display type: 31 * 96 FULL DOT
• Natural display
• Algebraic input logic: Natural V.P.A.M.
• Number of characters/lines: 16/1+10/1
• Significand function: 10+2

Memory

• Repeat function
• Variable memory: 9

Basic mathematics

• Functions: 417
• Scientific constants: 40
• Unit conversions: 40
• Bracket levels: 24
• Fraction calculations
• Angle dimensions DEG/RAD/GRAD
• Conversions between >DEG/>RAD/>GRAD
• Coordinate transformation Pol ÷ Rec
• Trigonometric functions sin/cos/tan/sin^-1/cos^-1/tan^-1
• Hyperbolic functions sinh/cosh/tanh/sinh^-1/cosh^-1/tanh^-1
• Exponent, log, In, 10^x, e^x
• Mathematical functions √, x², x-1, 1/x, x!, xy, x1/y
• Calculations based on n (hexadecimal/decimal/binary/octal)
• Logical operators (AND/OR/etc.)
• Calculations in the sexagesimal system
• Percentage calculations
• Technical notation ENG/ENG
• Calculation of complex numbers
• Random number generator
• Value table
• Matrix calculation/vector calculation
• Equation calculation

Statistics

• Summation of ∑x, ∑x²
• Summation of ∑x, ∑y, ∑x², ∑y², ∑xy
• Standard deviations for grouped and ungrouped values
• Regression analysis
• Permutations (nPr) and combinatorics (nCr)

Differential and integral calculus

• Numerical integral calculus
• Numerical differential calculus

Other

• Hardcase
• Automatic shut-off
• Energy supply: Solar+Battery
• Battery type: 1 x LR-44
• Size (H x W x D mm): 11 x 77 x 162Weight: 95 g
• Availability of models and/or lineups may differ depending on the country or region.
• Technical amendments and errors excepted. The sizes in figures do not correspond to the original sizes.
• The colours may differ slightly from the original.