Question 4. (a) Find the relative extrema of the functionf given by y x3 – 3x2 – 9x - 1 (1) Sketch and use a graph to estimate the relative extrema (ii) Then find the first and second derivatives (iii) Verify that relative extrema occur at those x-values (iv) Over what intervals is the graph of f concave up?

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A: Hello! thank you for the question but as per our honor code, we'll able to solve only the first…

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A: The scale and the viewing window of the graphing utility must be adjusted to obtain a clear graph.

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