Предмет: Математика, автор: drinsh

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Автор ответа: pushpull

1

Ответ:

f(3) = 5

Пошаговое объяснение:

в нашем случае выбираем промежуток, куда входит х =3

это промежуток $-1\leq x \leq 3$ (тут х меньше или равно 3)

значит f(3) = 3*3-4 = 5

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