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Thread: can someone help me simplify this?

  1. #1
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    can someone help me simplify this?

    can someone help me simplify this?-screen-shot-2018-07-08-3.53.18-pm.png
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  2. #2
    MHF Contributor

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    Re: can someone help me simplify this?

    We can write this as $\displaystyle 2\pi |a|\int_0^b \sqrt{x}\sqrt{1+ \frac{a^2}{4x}}dx$. That is the same as $\displaystyle 2\pi a \int_0^b \sqrt{x+ \frac{a^2}{4}}dx$. Can you integrate that?
    Last edited by HallsofIvy; Jul 8th 2018 at 01:32 PM.
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