FX991ES PLUS
Introduction
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.
Main Features
| Random Integers | Yes |
|---|---|
| New calculation priority sequence | Yes |
| Improved equation mode | Yes |
| Fraction calculations | Yes, with improved input method |
| Slide on hard plastic case | Yes |
| Statistical Data Entry | List-based |
| Multi replay | Yes |
| Ideal for Keystages 3 & 4 and above. | Age 11-16+ |
| Table of a function | Yes |
| Power | Solar/Battery |
| Natural Textbook Display | Yes |
Technical Specifications
| % | Yes |
|---|---|
| Auto power off | Yes |
| Battery Life | 3 years |
| Case | Slide-on |
| Complex numbers | Yes |
| Coordinate conversion | Yes |
| Memories | 9 |
| Scientific Constants | 40 |
| Statistics Data Editor | List-based |
| Trigonometrics (SIN/COS/TAN) | Yes |
| Vectors | Yes |
| Numeric Differentiation | Yes |
| Numeric integration | Yes |
| Parentheses | 24 |
| Permutations | Yes |
| Program Storage Areas | No |
| Reciprocals | Yes |
| Keystages Suitable For | 3, 4, & above |
| Logarithm | Yes |
| Metric / Imperial Conversions | 40 |
| Negative Indicator | Yes |
| Normal Distribution | Yes |
| Equation Solver | Yes |
| Expression editing | Yes |
| Factorials | Yes |
| Formula Solver | Yes |
| Keyboard material | Plastic |
| Table of a function | Yes |
| Weight (g) | 105 |
| Backspace/delete | Yes |
| Combinations | Yes |
| DEC/HEX/BIN/OCT conversions | Yes |
| Engineering Symbol Calculations | No |
| Random numbers | Yes |
| Reset | Yes |
| Roots & powers | Yes |
| square root | Yes |
| Standard deviation | Yes |
| Suitable for (ages) | 11 plus |
| Packaging | Blister card |
| Power regression | Yes |
| Power Supply | Solar/LR44 Battery |
| Quadratic regression | Yes |
| Radians | Yes |
| Logarithmic regression | Yes |
| Logic Operations | Yes |
| Mantissa + EXP | 10 + 2 |
| Matrices | Yes |
| Multi-replay | Yes |
| Natural Textbook Display | Yes |
| FIX/SCI/NORM | Yes |
| Fractions | Yes |
| Gradians | Yes |
| Hyperbolics | Yes |
| Inverse regression | Yes |
| Linear regression | Yes |
| Degrees | Yes |
| Degrees/minutes/seconds | Yes |
| Dimensions (mm) | 12.2 (H) x 80 (W) x 161 (D) |
| Display | TwinLine LCD DOT MATRIX |
| exponential regression | Yes |
| Exponents | Yes |