How do you find this antiderivative?
$\displaystyle \int \frac{x^2}{x^2+1}$
I see that the $\displaystyle x^2 +1$ looks like the derivative of $\displaystyle tan^{-1}(x)$, but I don't know how to antidifferentiate that equation. :/
How do you find this antiderivative?
$\displaystyle \int \frac{x^2}{x^2+1}$
I see that the $\displaystyle x^2 +1$ looks like the derivative of $\displaystyle tan^{-1}(x)$, but I don't know how to antidifferentiate that equation. :/