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Integration by Parts HELP

  1. Feb 27, 2008 #1
    Integration by Parts HELP!!!

    Hey, im working on some calculus and im having some trouble with the last few integration by parts problems. I got the first couple, and i grasp the concept of integration by parts but for some reason I just cant figure these 3. Any help would be greatly appreciated.

    1. The integral of (e^2x)sin3xdx

    2. The integral of cos(3x+1)cos(5x+6)dx

    3. The integral of x²ln²xdx

    P.S> Feel free to ask if you cant read the questions, I tried to write them out the best I could.

    Thanks in advance,

  2. jcsd
  3. Feb 27, 2008 #2
    you already have another post on these questions. These appear now to be hw problems, and u haven't shown what have u tried so far at all!
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