$cot\left(x\right)=1.8225$

$y=\frac{x^3\left(x^2+1\right)}{\sqrt{x^2+1}}$

$\lim_{x\to0}\left(\frac{ln\left(1+x^2\right)}{cosx-e^{x^2}}\right)$

$\frac{2x+10}{x+3}\ge1$

$\frac { x ^ { 4 } - 1 } { x + x ^ { 2 } }$

$\frac{\left(x+5\right)}{\left(+-2\right)}+\frac{\left(x+2\right)}{\left(x-2\right)}$

$\lim_{x\to1}\left(\frac{4x^2-3x}{x^3}\right)$