\[\boxed{\text{25\ (25).}\text{\ }\text{Еуроки\ -\ ДЗ\ без\ мороки}}\]
\[\textbf{а)}\ y = x^{3} - 8x\]
\[- 3 \leq x \leq 3\]
\[x\] | \[- 3\] | \[- 2\] | \[- 1,5\] | \[- 1\] | \[0\] | \[1\] | \[1,5\] | \[2\] | \[3\] |
---|---|---|---|---|---|---|---|---|---|
\[y\] | \[- 3\] | \[8\] | \[8,625\] | \[7\] | \[0\] | \[- 7\] | \[- 8,625\] | \[- 8\] | \[3\] |
\[E(y) = \lbrack - 8,625;8,625\rbrack.\]
\[\textbf{б)}\ y = \frac{4}{x + 2}\ \]
\[- 1,5 \leq x \leq 6\]
\[x\] | \[- 1,5\] | \[- 1\] | \[0\] | \[2\] | \[6\] |
---|---|---|---|---|---|
\[y\] | \[8\] | \[4\] | \[2\] | \[1\] | \[0,5\] |
\[E(y) = \lbrack 0,5;8\rbrack.\]