Предмет: Алгебра, автор: lanaanistratoffa

ОЧЕНЬ СРОЧНО!На рисунке изображен график функции, заданной уравнением

= 2x -х^2

a) Покажите на координатной плоскости множество решений неравенства:
- 2x + x2 > 0;
б) Какая из точек: (3, 4) или В (-1; -5), принадлежит множеству решений неравенства из пункта а?

Ответы

Автор ответа: EADF

Ответ:

хє(-∞;0)U(2;∞).

б) (3;4) подходит, т.к (-1;-5) здесь неуместно.

и я думаю, если ты вынес минус с формулы, то ветви будут направлены вниз, и это решение не подходит. подойдёт обратный ответ

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