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Homework Help: Don't know integrals so much

  1. Nov 27, 2006 #1


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    What is the integral of:

    [tex]dt= \frac{dr}{\sqrt{2\frac{GM}{r}+ 2C}}[/tex]​

    where C is a constant?

    I need to integrate this, but I don't know integrals so much. Thanks :rolleyes:
  2. jcsd
  3. Nov 27, 2006 #2


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    Homework Helper

    For simplicity, reduce your questions to general ones with as few constants as possible. (you can plug in whatever the specific constants are later). Are you asking how to compute:

    [tex]\int \frac{dx}{\sqrt{1+a/x}} [/tex]?

    If so, try the substitution [itex]u=\sqrt{1+a/x}[/tex].
  4. Nov 27, 2006 #3


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    Yes, I am asking that integral. Thank you!!!
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