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Old 2009-08-02, 01:43   #1

5·47 Posts
Default integration problem

Can anyone help me with this

integral of sqrt(1+sin^2 x)

it's been bothering me for the past few days, i've tried using substitution but with little success, and i don't think partial integration does the trick
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Old 2009-08-02, 04:35   #2
frmky's Avatar
Jul 2003
So Cal

22×33×19 Posts

This integral has no closed form solution. Look up the elliptic integrals.
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Old 2009-08-02, 14:08   #3
moebius's Avatar
Jul 2009

7158 Posts

WolframAlpha solution:
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