$$x \sqrt{1 - x^{2}}$$

$$- \frac{36 x}{\pi} + 2 \sin{\left(x \right)} + 9$$

$$x^{3} - 2 x^{2} + 3$$

$$5 x^{\frac{7}{3}} - 3 \sin{\left(2 x \right)}$$

$$x^{2} + \cos{\left(x \right)}$$

$$\begin{cases} x + 2 & \text{for}\: x \geq -3 \wedge x < 0 \\2 - x & \text{for}\: x \geq 0 \wedge x \leq 4 \\0 & \text{в других случаях} \end{cases}$$

$$y{\left(x \right)} = 3 x^{2} - 2 x - 2$$

$$\frac{1}{x}$$

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

$$y = x^{4} - 6 x^{2} + 4$$

$$\left(x^{2} + x\right) e^{\frac{x}{2}}$$

$$y - \left(3 x^{2} - 1\right) = 0,\,y - \left(- \frac{3}{x}\right) = 0$$

$$\operatorname{atan}{\left(\frac{y}{x} \right)} = x y$$