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:

\[f(x) = \frac{1}{5}x²\]

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

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

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

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

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

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

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

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

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

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