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Choose the correct option.
A point x = c is called the critical point of a function if:
A point $x = c$ is called the critical point of a function if:
- (a)$f'(c) = 0$
- (b)$f$ is not differentiable at $x = c$.
- (c)both (a) & (b).
- (d)none of the above.
Answer
Answer
Official answer keyCorrect option: (c)
Answer: (c) both (a) & (b).