$\int\left(\frac{x}{36+x^2}\right)dx$

$\sinh\left(2\ln\left(3x\right)\right)$

$25x^2+5+1$

$\frac{cos5x-cos7x}{sin5x-sin7x}$

$\log\left(d\right)-\left(y\right)\log\left(u\right)$

$\lim_{x\to0}\left(\frac{\ln\left(e^x-1\right)}{\ln\left(x\right)}\right)$

$\int\left(2x^{2}-4x\right)^{6}\left(x-1\right)dx$