Question

Please help me evaluate the following integral (click to see).

Answer 1

\[\int\limits_{}^{}\sin^2(5x)dx\]

Answer 2

You have to use the formula for cos 2x:

cos2x=1-2sin²x, so
2sin²x=1-cos2x,

sin²x = ½-½cos2x.

You've got a sin²(5x), so write the formula as:

sin²(5x)=½-½cos(10x)

Now you can easily find the antiderivative...

Answer 3

@Babyslapmafro: does this help you enough?

Answer 4

Yes I will try again

Answer 5

Keep me posted!