# Definite Integration by Substitution

## Definite Integration by Substitution

Definite Integration by Substitution requires to convert upper and lower limits of definite integration.
$$\displaystyle \int_{x=a}^{x=b}{f(x)}dx = \int_{u=c}^{u=d}{f(u)}du$$

# Practice Questions of Definite Integration by Substitution

### Question 1

Find $$\displaystyle \int_{-1}^{0}{x(1+x)^{10}}dx$$.

### Question 2

Find $$\displaystyle \int_{0}^{1}{x \sqrt{1-x^2}}dx$$.

### Question 3

Find $$\displaystyle \int_{3}^{18}{\frac{x}{\sqrt{x-2}}}dx$$.