FX-991ES
 Features overview
- Dot matrix display
- Natural textbook display
- 403 functions
- Solution of equations
- 20 pairs of values for metric conversion
- Calculation with complex numbers
- CALC key (temporary formula memory)
- 40 physical constants
- Matrix/vector calculation
- Numerical integral & differential calculus
- Two-way power
Functions & general information
General information:
- 403 functions and 40 scientific constants
- Display: Natural Textbook Display, 31 x 96 dot matrix
- Power supply: solar powered with an auxiliary battery
- with a hard case
- Dimensions (H x W x D): 12.7 x 161.0 x 80.0 mm
Functions:
- Repeat function
- 24 levels of brackets
- Variable memories (6)
- STO/RCL keys
- Scientific functions:
- Trigonometric and inverse trigonometric functions
- Hyperbolic and inverse hyperbolic functions
- Exponential functions 10x, ex
- Inverse function x-1
- Power and root functions x?, ?, x2, xy
- Logarithm functions (log, ln)
- Combinatoric and permutations
- Random number generator
- Converts between polar coordinates and rectangular coordinates
- Calculates with fractions (two modes)
- Converts between sexagesimal and decimal
- Calculates in gradian, degree and radian measure
- ? key, e key and % key
- SCI/FIX
- Statistics:
- Lists of based statistics
- Statistics with a variable
- standard deviation
- Statistics with two variables
- Linear
- Exponential
- abExponential
- Logarithmic
- Power
- Inverse
- Quadratic
- Solve/Calc
- Numeric integration
- Numeric differentiation
- ?()-function
- calculates with complex numbers
- a+bi /r??
- Calculations on the basis of n
- Logical calculations
- Equations
- Linear systems of equations
- Polynomial equations
- Linear systems of equations
- Polynomial equations
- Matrix
- Determinants
- Inverse matrix
- Vector
- internal product
- external product
- physical constants
- metric conversion
- Normal entry
- Fractions
- Roots
- Powers
- Parentheses
- Amounts
- Numeric differentiation/integration
- Totals
- Non-natural input (such as the MS models)
- Output in ? -form
- Output in ?-form
- Functions table
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