Постройте график функции: y=(40-10x^2)/(x^3-4x).

\[y = \frac{40 - 10x^{2}}{x^{3} - 4x} = \frac{10 \cdot \left( 4 - x^{2} \right)}{x\left( x^{2} - 4 \right)} =\]

\[= - \frac{10 \cdot \left( x^{2} - 4 \right)}{x\left( x^{2} - 4 \right)} = - \frac{10}{x}\]

\[x \neq 2,\ \ x \neq - 2.\]