(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

4) Let f(x)= ax+(b/x) where a and b are positive constants.

(a) Find in terms of a and b, the intervals on which f is increasing.

(b) Find the coordinates of all local maximum and minimum points.

(c) On what interval(s) is the graph concave up?

(d) Find any inflection points. Explain your answer.

3. The attempt at a solution

I need to take the derivative so it is f'(x)= a-b(x^-2) then I set this equal to zero to find the critical points, but then I'm not sure what value to solve for. X? If I do that I get critical points at +/- [tex]\sqrt{}b/a[/tex]

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# Homework Help: Simple Calc Problem Need Help

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