1 х 19.2. Найдите область определения функции: 1) у = ах; 2 3) y = 4 + 5; - х(х-2) 4) g = 5(x + 2); 5) y = 6) у 2) y= 2. 3 x + 2 2
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Ответ:
1) D (y) = (- ∞; 0) ∪ (0; ∞). E (y) = (- ∞; 0) ∪ (0; ∞)
2) D (Y) = R. E (Y) = R
3) D (Y) = R. E (Y) = R
4) D (Y) = R. E (Y) = R
5) D (Y) = (- ∞; 0) ∪ (0; ∞). E (Y) = (- ∞; 0) ∪ (0; ∞)
6) D (Y) = R. E (Y) = R