Вопрос:

Постройте и прочитайте график функции: y=(6/x; если -6<=x<-2; 4-x^2; если -2<=x<=2; -6/x; если 2<x<=6).

Ответ:

\[y = \left\{ \begin{matrix} \frac{6}{x};\ \ \ \ \ \ \ \ \ \ \ \ \ \ - 6 \leq x < - 2\ \ (1) \\ 4 - x^{2};\ \ \ \ \ \ \ \ - 2 \leq x \leq 2\ \ (2) \\ - \frac{6}{x};\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ 2 < x \leq 6\ \ (3) \\ \end{matrix} \right.\ \]

\[1)\ y = \frac{6}{x}\]

\[x\] \[- 6\] \[- 5\] \[- 4\] \[- 3\]
\[y\] \[- 1\] \[1,2\] \[- 1,5\] \[- 2\]

\[2)\ y = 4 - x²\]

\[x\] \[- 2\] \[- 1\] \[0\] \[1\] \[2\]
\[y\] \[0\] \[3\] \[4\] \[3\] \[0\]

\[3)\ y = - \frac{6}{x}\]

\[x\] \[3\] \[4\] \[5\] \[6\]
\[y\] \[- 2\] \[- 1,5\] \[- 1,2\] \[- 1\]

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