Предмет: Математика, автор: happyadelya

найдите область определения функции у=корень 4-х^2

Ответы

Автор ответа: Latac
0
Подкоренное выражение не может быть отрицательным, значит,  sqrt{4-x^2}  geq 0, 4-x²≥0, x²≤4.
Пусть х²=4, тогда х=±√4, х=±2.
х
²≤4 при х∈[-2;2]

Ответ: D(f)∈[-2;2]
Автор ответа: Latac
0
удачи, ставь лучший ответ)
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