Let be a function that is positive and differentiable on the entire real number line. Let
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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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