Question

Найдите область определения функции

Answer 1

1) x + 7 ≥ 0     ⇒    x ≥ - 7

2) 5 - x > 0   ⇒  - x > - 5      ⇒    x < 5
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             - 7                       5
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Область определения - все значения x ∈ [- 7 ; 5)