$\frac{dy}{dx}\left(1+ln\left(x.y\right)\right)$

$\int_{-1}^2\left(x^2+3x-7\right)\left(2x+3\right)dx$

$\int\left(x^2\:cosat\right)dx$

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

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

$\left(5n\right)\frac{1}{3}$

$5\left(7+6s-9t\right)$