- #1
bengaltiger14
- 138
- 0
Homework Statement
Evaluate ∫ x √ 4 + x2 dx by using the trigonometric substitution x = 2tanθ
I am starting on the right track by subbing x=2tanθ into x like this:
=∫ 2tanθ √ 4 + 2tanθ(2)
then, do I just integrate that for the correct answer?