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Math Help - Integral Question

  1. #1
    Junior Member
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    Sep 2009
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    Integral Question

    What does it mean when you have a problem that looks like this:

    \int \frac{dx}{\sqrt{25 + 16x^2}}

    I don't understand why the "dx" is on top of the fraction. Is that equivalent to

    \int \frac{1}{\sqrt{25 + 16x^2}} dx

    or is it different?
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  2. #2
    Math Engineering Student
    Krizalid's Avatar
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    They're the same, just a matter of tastes.
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