# Prove the Substitution Rule

1. Jul 21, 2008

### jkeatin

1. The problem statement, all variables and given/known data
If u=g(x) is a differentiable function whose range is an interval I and f is continuous on I, then Integral f(g(x)g'(x)dx=Integral f(u)du.

2. Relevant equations

3. The attempt at a solution

2. Jul 21, 2008

### rootX

3. The attempt at a solution ?