Casio FX-991 CE X scientific calculator
description of
Scientific calculator, Black FX 991 CE XNatural display
Menu system in Hungarian
668 available functions
QR code
Dual power supply
Display:
Resolution: 192 x 63 pixels
Natural display of mathematical expressions
LCD technology
Iconic menu design
Mantissa + exponential digits: 10 + 2
Internal working number of digits: 15
Levels of inserted brackets: 24
Useful functions:
Natural, textbook representation / NATURAL-V.P.A.M.
Keypress cache
NATURAL PAPER - Natural P.A.V.P.
Multiple browser function
Back to previous step
CALC function
SOLVE function
Answer function
Variables: 9
Automatic power off
Back to
Account allocation
Multi-line display
Special functions:
Calculations on n basis (Binary/Octal/Hexadecimal)
Logical operations
Calculations with technical symbols
Technical notes (ENG/ENG)
Scientific constants: 47
Metric transformations: 38
Useful functions:
Goniometric, inverse goniometric (sin/cos/tan/sin-1/cos-1/tan-1)
Hyperbolic, inverse hyperbolic (sinh/cosh/tanh/sinh-1/cosh-1/tanh-1)
Exponential, logarithmic (log, ln, 10x, ex)
Logarithmic functions on concrete bases
Second power and second root (x2/ )
Third power and third root (x3/3)
Exponents and roots (xy/[
Multiplications
Percentage calculations (%)
Roundings
Sixtieth ↔ tenth number system
Chart format (FIX, SCI)
Angular units (Degrees, Radian, Degrees)
Angular units conversion
Prime resolution
Proportion calculations
Calculations:
Differential calculations
Integral calculations
Algebra:
Equation systems ( 4 unknown)
Polynomial equations (grades 2,3,4)
Calculating inequalities
Table functions
Matrix calculations - 4x4
Calculations with complex numbers
Geometry:
Coordinate transformations
Românesc 
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Polski 
български 
Hrvatski 
