$\frac{3-x}{\sqrt{3}-\sqrt{x}}$

$\lim_{x\to\infty}\left(\frac{3ln\left(x\right)}{e^x}\right)$

$\lim_{x\to\infty}\left(\frac{2x^3-2x^2+x}{x^3+2x^2-x+1}\right)$

$\frac{\sin2x}{1-\cos2x}=\cot\left(x\right)$

$64 ^ { 3 } x ^ { 6 } - 216 z ^ { 9 }$

$341.22+35.678+172.7$

$\frac{dy}{dx}+2x^2y=0$