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

$$\frac{40}{\frac{\:5}{6}}$$

$$\frac{\tan\left(a\right)+\cot\left(b\right)}{\tan\left(a\right)\cot\left(b\right)}=\tan\left(b\right)+\cot\left(a\right)$$

$$\int\frac{x+4}{\left(4x^3-36x^2+56x\right)}dx$$

$$4,2+0,0022$$

$$\sqrt{x^2}-2x$$