Найди область определения функции f(x) = 1/|х|-1

Верных ответов: 2.
x≠-1

x≠1

x≠1,x≠-1

D(f) = (–∞; –1) ∪ (–1; +∞)

D(f) = (-∞; -1) U (-1; 1) U (1;+∞)

D(f) = (-∞; 1) U (1; +∞)​

;-;
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