$\left(u=x^2-7x+\frac{5}{x}\right)$

$\frac{d}{dx}\sqrt{\ln\sqrt{\cos^3x}}$

$\int\left(\frac{x}{\left(1-x^2\right)^5}\right)dx$

$f\left(x\right)=\frac{x^3+2x}{\sqrt[5]{x^7+1}}$

$\left(\sin^2+\cos^2\right)\left(\sin+\cos\right)$

$x^{0,\:5}+y^{0,\:5}=9$

$\frac{dy}{dx}\left(y^2+y=\frac{1}{x}\right)$