The weight, W, in lbs, of a child is a function of its age, a, in years, so W = f (a). (a) Do you expect f ′ (a) to be positive or negative? Why? (b) What does f (8) = 45 tell you? Give units for the numbers 8 and 45. (c) What are the units of f ′ (a) ? Explain what f ′ (a) tells you in terms of age and weight. (d) What does f ′ (8) = 4 tell you about age and weight? (e) As a increases, do you expect f ′ (a) to increase or decrease? Explain.
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Home » Mathematics » The weight, W, in lbs, of a child is a function of its age, a, in years, so W = f (a). (a) Do you expect f ′ (a) to be positive or negative? Why? (b) What does f (8) = 45 tell you? Give units for the numbers 8 and 45.