This is a calculator for engineer to actually use in the field.
Scientific calculator.
The actual formula expression calculator.
Engineering calculations and suitable for field use .
Feature.
1. The actual mathematical expressions .
2. Engineering and scientific calculator.
3. Fraction and Mixed Fraction input.
4. Calculation results displayed in fraction or root.
5. Differentiation function.
6. The integral function.
7. The sum of the series.
8. Unit conversion.
9. Specify functions and variables , store, use.