\[\boxed{\mathbf{712}.}\]
\[1)\ 2^{x} = 3 - 2x - x^{2};\]
\[y = 2^{x} - показательная\]
\[\ функция:\]
\[x\] | \[0\] | \[1\] | \[2\] |
---|---|---|---|
\[y\] | \[1\] | \[3\] | \[9\] |
\[y = 3 - 2x - x^{2} - уравнение\]
\[\ параболы:\]
\[x\] | \[- 4\] | \[- 3\] | \[- 2\] | \[0\] | \[1\] | \[2\] |
---|---|---|---|---|---|---|
\[y\] | \[- 5\] | \[0\] | \[3\] | \[3\] | \[0\] | \[- 5\] |
\[Ответ:\ \ x_{1} \approx - 3;\ \ x_{2} \approx 0,6.\]
\[2)\ 3^{- x} = \sqrt{x};\]
\[y = 3^{- x} = \left( \frac{1}{3} \right)^{x} -\]
\[показательная\ функция:\]
\[x\] | \[- 2\] | \[- 1\] | \[0\] |
---|---|---|---|
\[y\] | \[9\] | \[3\] | \[1\] |
\[y = \sqrt{x} - уравнение\ ветви\]
\[\ параболы:\]
\[x\] | \[0\] | \[1\] | \[4\] | \[9\] |
---|---|---|---|---|
\[y\] | \[0\] | \[1\] | \[2\] | \[3\] |
\[Ответ:\ \ x \approx 0,4.\]
\[3)\ \left( \frac{1}{3} \right)^{x} = - \frac{3}{x};\]
\[y = \left( \frac{1}{3} \right)^{x} - показательная\]
\[\ функция:\]
\[x\] | \[- 2\] | \[- 1\] | \[0\] |
---|---|---|---|
\[y\] | \[9\] | \[3\] | \[1\] |
\[y = - \frac{3}{x} - уравнение\ \]
\[гиперболы:\]
\[x\] | \[- 3\] | \[- 1\] | \[1\] | \[1\] |
---|---|---|---|---|
\[y\] | \[1\] | \[3\] | \[- 3\] | \[1\] |
\[Ответ:\ \ x = - 1.\]
\[4)\ \left( \frac{1}{2} \right)^{x} = x^{3} - 1;\]
\[y = \left( \frac{1}{2} \right)^{x} - показательная\]
\[\ функция:\]
\[x\] | \[- 3\] | \[- 2\] | \[- 1\] | \[0\] |
---|---|---|---|---|
\[y\] | \[8\] | \[4\] | \[2\] | \[1\] |
\[y = x^{3} - 1 - уравнение\]
\[\ кубической\ параболы:\]
\[x\] | \[- 2\] | \[- 1\] | \[1\] | \[2\] |
---|---|---|---|---|
\[y\] | \[- 9\] | \[- 2\] | \[0\] | \[7\] |
\[Ответ:\ \ x \approx 1,1.\]