∫ sin(2t)*e^[cos(t)] dt (from t=0 to π)
trig identity: sin2t= 2sintcost
bring constant to the outside
=> 2 ∫ sin(t)cos(t)*e^[cos(t)] dt (from t=0 to π)
I did u substitution and did
Im not sure what to after this. Do I divide du=-sint(dt) by negative 1 and bring that -1 to the outside of integral since there is only a sin(t)dt not -sin(t)dt?
I appreciate any help!