$\int3\:x\:e^{-x^2}dx$

$\frac{9x^3-12x^4+21x^2+3}{3x}$

$-2.31\left(-5.9\right)$

$\left(x^3-\frac{1}{2}\right)^2$

$\lim_{x\to0}\left(\frac{sin\left(\frac{\pi}{4}\left(x-3\right)\right)}{\pi\left(x-3\right)}\right)$

$\left(ln\left(y\right)\right)^5\frac{dy}{dx}=x^5y$

$2.65\csc\left(x\right)-7.02=0$