I know its easier to use the substitution method, by I'm trying to see how it'll work for integration by parts. I follow the LIATE method for integration by parts.(adsbygoogle = window.adsbygoogle || []).push({});

Now if I take u=cos(x) and dv = sin(x), the answer changes.

Can you please explain this to me? Which is the 'right' answer?

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# Intergration by parts for sin(x)cos(x)

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