Real Smart Calculator

If you are looking for a good calculator app that support not only the basic operations but also the advanced operations, such as equation solver, integration, derivation,..This app is the best choice for you.
Real Smart Calculator includes following feature:
- Basic operations: +, -, x, /, root, logarit, sin, cos, tan, ...
- Math expression evaluation. Example: 0.125 + 3*4 - (2sin(3)-5)
- Convert Decimals to Fractions and vice versa. Example 0.125 <-> 1/8.
- Calculate approximate integration of function f(x) from x=a to x=b. Example: (see picture).
- Calculate approximate derivation of function f(x) at x0. Example: (see picture).
- Find approximate root of equation. Example: (please see picture)
- Solve quadratic equation.Example: (please see picture)
- Solve cubic equation.Example: (please see picture)
- Solve multiple linear equation (unlimited number of equations and variables). Example: (please see picture)
- Store the math expression and it's result.
- This app is free.
- Multiple themes