What is the integral of

label Calculus
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\int (1+x^2)^(-1) dx

Aug 20th, 2015

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The integral of (1+x^2)^(-1) dx  = arctan(x), since the derivative of arctan(x) is 1/(1+x^2)

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Aug 20th, 2015

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Aug 20th, 2015
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Aug 20th, 2015
Oct 23rd, 2017
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