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Indefinite Integral

  1. Apr 22, 2008 #1
    1. The problem statement, all variables and given/known data
    The integral of 5*(sin(6x)/sin(3x))dx

    3. The attempt at a solution

    I'm not quite sure what to do with this one. I moved 5 to the left of the integral, but then i'm lost. Apparently i'm rusty on these trig identities.

    Could anyone help me get started? Thank you.
  2. jcsd
  3. Apr 22, 2008 #2
    Look up the double angle formula for sine, wikipedia is good. You should be able to simplify with the bottom some then.
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