\[\boxed{\text{351\ (351).}\text{\ }\text{Еуроки\ -\ ДЗ\ без\ мороки}}\]
\[1)\ A\ ( - 8;64):\ \ \]
\[64 = ( - 8)^{2}\]
\[64 = 64 - \ проходит.\ \]
\[2)\ B\ ( - 9;\ - 81):\ \ \]
\[- 81 = ( - 9)^{2}\]
\[- 81 \neq 81 - \ не\ проходит.\ \]
\[3)\ \text{C\ }(0,5;2,5):\ \ \]
\[2,5 = (0,5)^{2}\text{\ \ }\]
\[2,5 \neq 0,25 - \ не\ проходит.\]
\[4)\ \text{D\ }(0,1;0,01):\]
\[\ 0,01 = {0,1}^{2}\text{\ \ }\]
\[0,01 = 0,01 - \ проходит.\]
\[\boxed{\text{351.}\text{\ }\text{Еуроки\ -\ ДЗ\ без\ мороки}}\]
\[y = \left\{ \begin{matrix} - \frac{4}{x},\ \ \ \ \ \ \ \ \ \ \ \ \ если\ x < - 2; \\ 2,\ \ если - 2 \leq x \leq 2; \\ \frac{4}{x},\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ если\ x > 2 \\ \end{matrix} \right.\ \]
\[y = - \frac{4}{x}\]
\[x\] | \[1\] | \[2\] | \[4\] | \[- 1\] | \[- 2\] | \[- 4\] |
---|---|---|---|---|---|---|
\[y\] | \[- 4\] | \[- 2\] | \[- 1\] | \[4\] | \[2\] | \[1\] |
\[y = \frac{4}{x}\]
\[x\] | \[1\] | \[2\] | \[4\] | \[- 1\] | \[- 2\] | \[- 4\] |
---|---|---|---|---|---|---|
\[y\] | \[4\] | \[2\] | \[1\] | \[- 4\] | \[- 2\] | \[- 1\] |