\[\boxed{\text{496\ (496)\ .}\text{\ }\text{Еуроки\ -\ ДЗ\ без\ мороки}}\]
\[\textbf{а)}\ x^{3} = 4x\]
\[Построим:\ \ y = x^{3}\ и\ \text{\ \ }y = 4x.\]
\[y = x^{3}\]
\[x\] | \[- 1\] | \[0\] | \[1\] | \[2\] |
---|---|---|---|---|
\[y\] | \[- 1\] | \[0\] | \[1\] | \[8\] |
\[y = 4x\]
\[x\] | \[0\] | \[1\] |
---|---|---|
\[y\] | \[0\] | \[4\] |
\[Ответ:x = 0;\ x = 2;\ \ x = - 2.\]
\[\textbf{б)}\ x^{3} = - x + 3\]
\[Построим:y = x^{3}\ и\ \ \ y = - x + 3\]
\[y = x^{3}\]
\[x\] | \[2\] | \[1\] | \[0\] | \[- 2\] |
---|---|---|---|---|
\[y\] | \[4\] | \[1\] | \[0\] | \[- 4\] |
\[y = - x + 3\]
\[x\] | \[0\] | \[1\] |
---|---|---|
\[y\] | \[3\] | \[2\] |
\[Ответ:x = 1.\]