$\frac{\csc^2a-1}{\csc^2\left(a\right)}$

$2a+8b-6c\:si\:a=2,\:b=1,\:c=0$

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

$\frac{dy}{dx}=-32xy+12y-96x+36$

$\lim_{x\to0}\left(2\sin\left(x\right)^{8\tan\left(x\right)}\right)$

$\left(-3x^3-7\right)$

$\lim_{x\to1}\left(\frac{sin^4\left(2\cdot\pi\left(1-x\right)\right)}{4\cdot\pi\cdot\left(1-x\right)^2}\right)$