Предмет: Алгебра, автор: aveiro1

Найдите значение х, при котором функция у = f (x) принимает наименьшее значение, и определите его у=2х^2+8х+5

Ответы

Автор ответа: SYSTEMCORE

$y=2x^2+8x+5$

Это парабола, ветви которой направлены вверх. Наименьшее значение будет в вершине параболы.

$displaystyle x_0=frac{-b}{2a}=frac{-8}{2*2}=-frac{8}4=-2$

Ответ: x = -2

Автор ответа: aveiro1

Спасибо) а график какой?

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