Is there any more work you can show us?
As a method I would use a double angle formula with cos2x
EDIT: Now that this has been moved, I'm wondering what the question is. I assumed it was an integration problem but that's not very clear.
Is there any more work you can show us?
As a method I would use a double angle formula with cos2x
EDIT: Now that this has been moved, I'm wondering what the question is. I assumed it was an integration problem but that's not very clear.