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Thread: Calc II Question

  1. #1
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    hope this helps... Paint lol

    the answer will be like what zipykido got

  2. #2
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    First factor the bottom, it will be ((x+2)+3)((x+2)-3). Then I forget whats its called but there is a trick where you set it up as:
    x/((x+2)^2 - 9) = A/((x+2)+3)) + B / ((x+2)-3)

    Then obviously multiply to get rid of the denominators and you end up with the equation:

    x = A((x+2)+3) + B((x+2)-3)
    which is:
    x = A(x+5) + B(x-1)
    Use different X values to cancel each letter out like plug in X=-5 first to get rid of A
    -5 = B(-5-1)
    5/6 = B
    Do it for A and you should get A = 1/6

    Now integrate
    1/6/((x+2)+3) + 5/6/((x+2)-3)

    Lol that may be really confusing but ya that is what you should do I believe, I took Calculus this year in school but kind of forget it lol.

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