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Math Help - integral help

  1. #1
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    Arrow integral help

    hey i am new around here, i am just trying to integrate:
    (x+1)sqrt(x^2+2x-5)
    not too sure, but i made u = x^2+2x-5, then du/dx = 2x +2
    help?
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  2. #2
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    Quote Originally Posted by iExcavate View Post
    hey i am new around here, i am just trying to integrate:
    (x+1)sqrt(x^2+2x-5)
    not too sure, but i made u = x^2+2x-5, then du/dx = 2x +2
    help?
    So (x+1)dx = \frac{du}{2} and your integral becomes \frac{1}{2} \int u \sqrt{u}\,du
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