$\frac{d}{dy}\left(\ln\left(\frac{\left(1+y\right)\left(1+x\right)}{\left(1-y\right)\left(1-x\right)}\right)\right)$

$\frac{11x-6x^3-9\:+12x^2}{3x^2-1}$

$\left(3y+4\right)\left(3y-2\right)$

$x^2+7x-15$

$\int_0^{\frac{1}{2}}x\ln\left(x^2\right)dx$

$\int3am\:dm$