$\int\frac{\left(1-\cos\left(x\right)^2\right)\cdot\sin\left(x\right)}{\cos\left(x\right)\cdot\left(1+4\cos\left(x\right)^2\right)}dx$

$64\:-36m^2$

$4x-13\le2x+15$

$\lim_{x\to\infty}\left(1+\frac{1}{2n}\right)^n$

$\frac{x^2-9x+15}{x^2-5}$

$4xy\frac{dx}{dy}=x^2+1$

$\frac{dy}{dx}\left(y=x\sqrt{\frac{x^2-9}{x^2+9}}\right)$