область визначення функции f(x)= - Вопрос по алгебре - №3455149

Вопрос по алгебре:
область визначення функции f(x)= x³-18x
- Автор:
  kiki87
Ответ:
$x ^{3} - 18x = 0 \\ x(x ^{2} - 18) = 0 \\ x = 0 \\ x ^{2} - 18 = 0 \\ x ^{2} = 18 \\ x1 = 3 \sqrt{2} \\ x2 = - 3 \sqrt{2}$
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- Отвечал:
  tootsie26wi
- 0
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