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 2009-08-02, 01:43 #1 sma4   100000111111102 Posts 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
 2009-08-02, 04:35 #2 frmky     Jul 2003 So Cal 2,399 Posts This integral has no closed form solution. Look up the elliptic integrals.
 2009-08-02, 14:08 #3 moebius     "CharlesgubOB" Jul 2009 Germany 2×311 Posts WolframAlpha solution: http://www73.wolframalpha.com/input/...2Bsin%5E2+x%29

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