Вопрос:

Зная, что f(x)=1/5x^2, заполните таблицу. Постройте график функции. Найдите: f(-2,5); f(2,5); f(-3,5); f(3,5).

Ответ:

\[f(x) = \frac{1}{5}x²\]

\[x\]	\[0\]	\[\pm 1\]	\[\pm 2\]	\[\pm 3\]	\[\pm 4\]	\[\pm 5\]
\[y\]	\[0\]	\[\frac{1}{5}\]	\[\frac{4}{5}\]	\[\frac{9}{5}\]	\[\frac{16}{5}\]	\[5\]

\[f( - 2,5) = 1,25;\]

\[f(2,5) = 1,25;\]

\[f( - 3,5) = 2,45;\]

\[f(3,5) = 2,45.\]

\[g( - 2,5) = - 1,25;\]

\[g(2,5) = - 1,25;\]

\[g( - 3,5) = - 2,45;\]

\[g(3,5) = - 2,45.\]