Question: Let be a function that is positive and differentiable on the entire real number line. Let g(x) = In (x). (a) When g is

Let ƒ be a function that is positive and differentiable on the entire real number line. Let g(x) = In ƒ(x).

(a) When g is increasing, must ƒ be increasing? Explain.

(b) When the graph of ƒ is concave upward, must the graph
of g be concave upward? Explain.

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