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Math Help - U substitution help

  1. #1
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    kaka
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    U substitution help

    I don't understand what happens to the du for u subsitution when solving for integrals. I understand that u is the innermost function and the antiderivative of it is what we need to find to solve the intergral but what happens to the du?
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  2. #2
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    Re: U substitution help

    After the substitution you are integrating with respect to du. After you have integrated, it disapears, just like a dx does.
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