\[\boxed{\mathbf{178}\mathbf{.}}\]
\[1)\ \sqrt[3]{x} = x^{2} + x - 1\]
\[y = \sqrt[3]{x} - уравнение\ \]
\[кубической\ параболы.\]
\[x\] | \[- 8\] | \[- 1\] | \[0\] | \[1\] | \[8\] |
---|---|---|---|---|---|
\[y\] | \[- 2\] | \[- 1\] | \[0\] | \[1\] | \[2\] |
\[y = x^{2} + x - 1 - уравнение\ \]
\[параболы.\]
\[x_{0} = - \frac{b}{2a} = - \frac{1}{2};\ \ \ \text{\ \ }\]
\[y_{0} = \frac{1}{4} - \frac{1}{2} - 1 = - 1\frac{1}{4}.\]
\[Ответ:\ \ x = \pm 1.\]
\[2)\ x^{- 2} = 2 - x^{2};\]
\[y = x^{- 2} - уравнение\ \]
\[гиперболы.\]
\[x \neq 0;\ \ \ y > 0.\]
\[Возрастает\ при\ x < 0\ и\ \]
\[убывает\ при\ x > 0.\]
\[y = 2 - x^{2} - уравнение\ \]
\[параболы:\]
\[x_{0} = 0;\ \text{\ \ }y_{0} = 2 - 0^{2} = 2.\ \]
\[Ответ:\ \ x = \pm 1.\]