\[f(x) = x^{2} - 4x + 3 \Longrightarrow ветви\ \]
\[вверх;\]
\[x_{0} = \frac{4}{2} = 2;\ \ \]
\[y_{0} = 4 - 8 + 3 = - 1\]
\[x\] | \[0\] | \[1\] |
---|---|---|
\[y\] | \[3\] | \[0\] |
\[f(x) > 0\ \ при\ \ x < 1\ \ и\ x > 3;\]
\[f(x) \leq 0\ \ при\ \ \ 1 \leq x \leq 3.\]