fx-991ES Plus
This top of the range scientific calculator presents 403
mathematical functions on its exceptionally clear and easy-to-read
Natural Textbook Display. This ever popular model is now
available with Random Integers and an improved equation mode, as
well as solar power.
Key Features
The Natural Display (Natural-V.P.A.M.) shows mathematical
expressions like roots and fractions as they appear in your
textbook, and this increases comprehension because results are
easier to understand.
| Natural-V.P.A.M. |
| Dot matrix display |
| 15 and 10+2 digits |
| 417 functions |
| Equation solver |
| 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 |
| Random Integers |
| New equation Mode |
| Function table |
| Two-Way-Power |
Technical Specifications
General information:
|
| 417 functions |
| Display: "Natural Textbook Display", Natural V.P.A.M. |
| Power supply: solar powered with an auxiliary battery |
| with a hard case |
| Dimensions (H x W x D): 162,0 x 80,0 x 11,1 mm |
| Weight: 95g |
Functions:
|
| NEW: New fraction input mode |
| NEW: Improved equation mode |
| NEW: Random integers |
| 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 |
| π key,ekey 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∠θ |
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 π-form |
| Functions table |
| Specs are subject to change w/o notice. |
Top of page
