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## Homework Statement

integral 31(cos^2x)(sin(2x)dx

## Homework Equations

## The Attempt at a Solution

I am so lost on this problem... Any suggestions would be great

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- Thread starter bgut06
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- #1

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integral 31(cos^2x)(sin(2x)dx

I am so lost on this problem... Any suggestions would be great

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phyzguy

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Thanks for the help!

- #4

phyzguy

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Now collect the cos(x) terms together. Then what do you have?

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- #6

phyzguy

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It's much simpler if you try u=cos(x), but I think your solution is correct.

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