$\int lnx\:ln\left(x\right)dx$

$+y-4y+5y-y$

$\frac{d}{dx}\frac{1}{\sqrt{4x^2-5x+7}}$

$\int_{-2\pi}^{-\frac{5\pi}{2}}5\:cos\left(x\right)dx$

$\lim_{x\to+2}\frac{x^2-x+6}{x^2+x-2}$

$\int\left(2x^2\cos\left(x^3\right)\right)dx$

$l\lim_{x\to\frac{\pi\:}{2}}\left(\frac{\ln\left(\sin\left(x\right)\right)}{\left(\pi\:-2x\right)^2\:}\right)$