USubstitution  Integration Techniques
USubstitution
Lessons
Notes:
Prerequisite:
* Differential Calculus –“Chain Rule”
* Integral Calculus –“Antiderivatives”
Note:
The main challenge in using the $uSubstitution$ is to think of an appropriate substitution.
 Question: how to choose $u$?
 Answer: choose $u$ to be some function in the integrand whose differential also occurs!

1.
Evaluate the indefinite integral.

2.
Evaluate the indefinite integral.

3.
Evaluate the indefinite integral.