Question

Asked Nov 5, 2019

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Step 1

To prove that the derivative of f(x) vanishes at any critical point x=c (maxmum or minimum)

Step 2

Under the given conditions, the derivative vanishes at a maximum point

Step 3

a) the derivativ f'(c) is less than or equal to 0. As the limit of the difference quotient exists (as f is ...

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