Mathematics · Application of Derivatives
The interval on which the function f(x) = 2x3 + 9x2 + 12x - 1 is decreasing is:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1[-1, ∞)
- 2[-2, -1]✓
- 3(-∞, -2]
- 4[-1, 1]
Correct answer
[-2, -1]
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