Предмет: Алгебра, автор: dhdjdjdk27

принадлежит ли графику функции y=-2x^2-3x+4 точка A (1;-1)?

Ответы

Автор ответа: Tarrus
0

Ответ:

Да

Объяснение:

Все доказано в графике функции

Приложения:

webdev: скорее всего это задание нужно было выполнить без построения графика
Автор ответа: webdev
0

Ответ:

Да, принадлежит.

Объяснение:

y = - 2x² - 3x + 4         A( 1 ; - 1 )

                             x = 1         y = - 1

- 1 = - 2 · 1² - 3 · 1 + 4

- 1 = - 2 - 3 + 4

- 1 = - 5 + 4

- 1 = - 1 , верное равенство ⇒ точка A( 1 ; - 1 ) принадлежит графику функции y = - 2x² - 3x + 4.

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