- #1
KingBigness
- 96
- 0
Homework Statement
[itex]\int cos^{2}(bx)dx[/itex]
Homework Equations
The Attempt at a Solution
This integral popped up in my quantum mechanics class yesterday and I solved it through double substitution to get,
[itex]\frac{x}{2} + sin(bx) * \frac{1}{4b}[/itex].
My question is, someone in my class said there was an easier way to solve this that only took 2-3 lines. Does anyone here have any ideas on what that may be?