Application of Derivatives · Class 12 · CBSE · Science Mathematics
For the function f(x) = x³ − 12x + 5, the intervals on which f is increasing are:
Practice question from Application of Derivatives (Class 12 · CBSE · Science Mathematics), with the correct answer and a step-by-step solution.
easy · MCQ · Q-F80671
For the function f(x) = x³ − 12x + 5, the intervals on which f is increasing are:
- A.(-∞, -2) and (2, ∞)Correct answer
- B.(-2, 2)
- C.(-∞, 2)
- D.(-2, ∞)
Solution
We have . This derivative is positive for and , so the function is increasing on and .
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