You can enter expressions the same way you see them in your math textbook. Implicit multiplication (5x = 5*x) is supported. If you are entering the integral from a mobile phone, you can also use ** instead of ^ for exponents.

**The following variables and constants are reserved:**

*e*= Euler's number, the base of the exponential function (2.718281...)*i*= imaginary number (*i*² = -1)*pi*, π = the ratio of a circle's circumference to its diameter (3.14159...)*phi*, Φ = the golden ratio (1,6180...)*t, u*and*v*are used internally for integration by substitution and integration by parts

## Supported integration rules and methods

The calculator decides which rule to apply and tries to solve the integral and find the antiderivative the same way a human would.

- Integration of constants and constant functions
- Integration by Parts
- Integration by Subsitution (u-substitution)
- Exponential and Logarithmic Functions
- Trigonometric and Hyperbolic functions
- Integration by splitting the function into partial fractions