Подмножества значений функций

$$y=x^2,E_x=\left\{-1⩽x⩽2\right\}$$

$$y=\lg x,E_x=\left\{10<x<1000\right\}$$

$$y=\frac{1}{\pi }\mathrm{arcctg}x,E_x=\left\{-\infty <x<+\infty \right\}$$

$$y=\mathrm{ctg}\frac{\pi x}{4},E_x=\left\{0<|x|⩽1\right\}$$

$$y=|x|,E_x=\left\{1⩽|x|⩽2\right\}$$

$$y=a+(b-a)x$$

$$y=\frac{1}{1-x}$$

$$y=\frac{x}{2x-1}$$

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

$$y=\mathrm{ctg}\pi x$$

$$y=x+[2x]$$