Here's the question you clicked on:
patbatE21
Evaluate the integral using integration by parts with the indicated choices of u and dv: 1) Indefinite integral ln(2x +1)dx 2) Definite integral from x= pi to x= 0 (tsin3t)dt
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do you still need help?
so far i let u =t, dv=sin (3t)dt, du = dt
and v= -(1/3) cos(3t)
Yes, http://www.wolframalpha.com/input/?i=Integrate%5Bt+Sin%5B3t%5D%2C%7Bt%2C0%2CPi%7D%5D