\[\boxed{\text{350\ (350).}\text{\ }\text{Еуроки\ -\ ДЗ\ без\ мороки}}\]
\[1)\ если\ x = - 6:\ \ \]
\[y = ( - 6)^{2} = 36\]
\[если\ x = 0,8:\ \]
\[y = (0,8)^{2} = 0,64\]
\[если\ x = - 1,2:\ \ \]
\[y = ( - 1,2)^{2} = 1,44\]
\[если\ x = 150:\ \ \]
\[y = 150^{2} = 22\ 500.\]
\[2)\ если\ y = 49:\ \ \]
\[x^{2} = 49\ \]
\[x = 7\ \ \]
\[x = - 7.\]
\[если\ y = 0:\ \ \]
\[x^{2} = 0\]
\[x = 0.\]
\[если\ y = 2500:\ \ \]
\[x^{2} = 2500\ \ \]
\[x = \pm 50.\]
\[если\ y = 0,04:\ \ \]
\[x^{2} = 0,04\ \ \]
\[x = \pm 0,2.\]
\[\boxed{\text{350.}\text{\ }\text{Еуроки\ -\ ДЗ\ без\ мороки}}\]
\[1)\ y = \left\{ \begin{matrix} - \frac{2}{x},\ \ \ \ \ если\ x \leq - 1; \\ - 2x,\ \ \ если\ x > - 1 \\ \end{matrix} \right.\ \]
\[y = - \frac{2}{x}\]
\[x\] | \[1\] | \[2\] | \[4\] | \[- 1\] | \[- 2\] | \[- 4\] |
---|---|---|---|---|---|---|
\[y\] | \[- 2\] | \[- 1\] | \[- 0,5\] | \[2\] | \[1\] | \[0,5\] |
\[y = - 2x\]
\[x\] | \[1\] | \[0\] |
---|---|---|
\[y\] | \[- 2\] | \[0\] |
\[При\ a = 2;a < 0.\]
\[2)\ y = \left\{ \begin{matrix} 3x,\ \ \ \text{\ \ \ \ \ \ \ \ \ \ \ \ \ \ }если\ x \leq 2; \\ \frac{12}{x},\ \ \ \ \ \ \ если\ \ 2 < x < 4; \\ 3,\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ если\ \ x \geq 4 \\ \end{matrix} \right.\ \]
\[y = 3x\]
\[x\] | \[0\] | \[1\] | \[2\] |
---|---|---|---|
\[y\] | \[0\] | \[3\] | \[6\] |
\[y = \frac{12}{x}\]
\[x\] | \[2\] | \[3\] | \[4\] | \[- 2\] | \[- 3\] | \[- 4\] |
---|---|---|---|---|---|---|
\[y\] | \[6\] | \[4\] | \[3\] | \[- 6\] | \[- 4\] | \[- 3\] |
\(При\ a = 6;\ \ a < 3.\)