$3\cos\left(2x\right)+4\csc\left(x\right)$

$5\int_0^{\infty}\frac{\sin\left(x\right)}{x}dx$

$x\left(\sqrt{\frac{1-x}{x}}\right)$

$\frac{dy}{dx}\:+\:3y\:=\:x\cdot e^{-2x}$

$3x^3+19x^2$

$\left(-4\right).\left(-3\right)+2\:.\:\left(-5\right)$

$f\left(x\right)=\ln\left(\frac{x^{\frac{5}{4}}\cos\left(x\right)}{2x^2+8x+6}\right)$