$\int\frac{\cos\left(\frac{1}{x}\right)}{2x^2}dx$

$\left(4x^5-x\right)^2$

$\left(3x^4+2\right)\left(2x^5-\sqrt{5}x\right)$

$4xy^5+2xy^6-xy^5$

$\left(2x^4+2\right)^{cosx}$

$\int\left(x^3\sqrt{x^2+34}\right)dx$

$\lim_{x\to\infty}\left(\sqrt{x-\sqrt{x}}-\sqrt{x}\right)$