Question: Thinking [14 marks] 19. Use the first or second derivative test (or both) to find the local maximum or minimum points of f(x) =

Thinking [14 marks] 19. Use the first or second derivative test (or both) to find the local maximum or minimum points of f(x) = x* - 8x3 + 18x2 [4 marks] 20. Determine the points of inflection of f(x) 1 = 2 x +3 [4 marks]

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