# Homework Help: How to go about integrating this

1. Feb 24, 2014

### samjohnny

1. The problem statement, all variables and given/known data

Attached

3. The attempt at a solution

I'm not sure how to go about integrating this, i.e. integration by parts, substitution etc?

Any ideas?

#### Attached Files:

• ###### integral.JPG
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2. Feb 24, 2014

### Curious3141

Hint: I would probably make it a little easier by making the sub y = wt first to get a simple argument for the cosine. Then sub y = 2x and apply the double angle formula for cosine and simplify the integrand.