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

$\lim_{x\to0}\left(\sec\left(x\right)-\tan\left(x\right)\right)$

$\frac{dy}{dx}=ax$

$x-1=x^2-2x+1$

$\frac{\tan\left(x\right)}{\csc\left(x\right)}=\sec\left(x\right).\cos\left(x\right)$

$-\left(2\right)\left(2\right)+\left(-2\right)\left(1\right)+\left(-3^2\right)+\left(-3\right)\left(1\right)$

$\int\:\left(x^2+5\right)e^{-2x}dx$