After having attempted integration by parts, it only seems to make this problem harder! I tried having u = e^(2x), and as the work shows, u = sin(3x) and neither way brings me anywhere. (In the problem x = theta)
(I attached my work.)
Someone please help me!
Wolfram Alpha shows something beyond my understanding: http://www.wolframalpha.com/input/?i=integral+e^(2x)+*+sin(3x)
I am getting really scared because I tried to advance in my homework but the following problem seems to be similar to this one and if I can't do this one then I can't advance! I will still attempt it however, while someone answers this question here.