Question

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Answer 1

There's the question. I chose B but I'm not too sure

Answer 2

well is B the BEST way?

Answer 3

I have no clue, I think?

Answer 4

Try A and see what happens

Answer 5

and try B to see which one is better

Answer 6

I still think it's B, but I don't know..

Answer 7

well if you choose B, then you'll have to integrate cos^3(x), which requires integration by parts again.

The answer is A, because now you just let u = sinx, which gives du = cosx, which then gives you u^5(1-u^2) du

Answer 8

a simple polynomial

Answer 9

Oh, that makes sense. Thank you..