Question

1. Let f(z) x³ – 121².

(a) On what intervals is f(x) increasing and decreasing?

(b) At what points (x-coordinates) does f(x) have local minimums and maximums?

(c) Over what intervals is the graph of f(z) concave up and concave down?

(d) What are the x-coordinates of the points of inflection of f(x)?

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