$\frac{dy}{dx}=\frac{xe^y}{2t-1}$

$\left[\left(9\right)\:.\:\left(-3\right)\:.\:\left(4\right)\:\right]$

$\frac{d}{dx}\frac{e^{3x}}{e^{-x}+2}$

$2\sqrt{3}\cos\left(x\right)\:=\:\sin\left(4x\right)$

$\lim_{x\to\infty}\left(\frac{x\sqrt{x^2-1}-x-1}{x+1}\right)$

$\frac{dy}{dx}\left(y=5x+3\right)$

$x^2+2x-7$