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Math Help - integration

  1. #1
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    integration

    integrate
    (9-y)(y^[1/2]) dy


    so how do i know which will be my u? so i can obtain my u'?
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  2. #2
    MHF Contributor chiph588@'s Avatar
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    Quote Originally Posted by nuclear123 View Post
    integrate
    (9-y)(y^[1/2]) dy


    so how do i know which will be my u? so i can obtain my u'?
    If you want to use substitution, set  u \sqrt{y} .
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