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Question
Let f have second derivative at c such that f′(c) = 0 and f"(c) > 0, then c is a point of ______.
Solution
Let f have second derivative at c such that f′(c) = 0 and f"(c) > 0, then c is a point of Local minima.
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Solution: f(x) = x3 – 9x2 + 24x
∴ f'(x) = `square`
∴ f''(x) = `square`
For extreme values, f'(x) = 0, we get
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