Integrate another :

âˆ«e^{cos x}sin(2x)

2 Answers

In such problems where the two fns involved can't be represented in each other terms like e^x and sin(2x) Integration by parts is helpful.

Now U can do it...........

sin2x=2sinxcosx

take cosx=t
then sinxdx=-dt

apply byparts...

âˆ«e^t . 2t.(-dt).

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