Автор - ermek17

найдте наименьшее значение функции у=х^3 - 4x^2 - 3x - 11

Ответ

Автор - karasikov
f(x) = x^3 -4x^2-3x-11; \ f'(x) = 3x^2-8x - 3=(3x +1)(x-3)
x < -1/3 f(x) ↑
-1/3 < x < 3 f(x) ↓
x > 3 f(x) ↑
=> Fmin = f(3) = 27 - 36 - 9 - 11 = -29

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