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What is the antiderivative of $\frac{x}{x^{2} + 1}$ $x/(x^2+1)$ ?

1 Answer

Feb 26, 2016

I found: $\frac{1}{2} ln (x^{2} + 1) + c$ $1/2ln(x^2+1)+c$

Explanation:

I tried by substitution:
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