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OpenStudy (anonymous):
integrate tan(^-1)x dx
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OpenStudy (goten77):
http://www.wolframalpha.com/input/?i=integrate+tan^-1%28x%29&lk=4 personally i just recognize the chain rule basic setup and apply that \[\int\limits_{?}^{?} \tan ^{-1}u du = -\ln \left| \cos u \right| +c \] the proof takes a while to show but just go by the parent function/chain rule
OpenStudy (anonymous):
thank you
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