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...Problem set solutions prof justin marion econ m winter ns suppose the production function for widgets is given by q kl k l where represents annual quantity of produced capital input and labor a graph total average productivity curves at what level does this reach maximum how many are that point see gures apl to nd take derivative it equal zero solve obtain output b again assuming taht mpl curve which mpliszero when c inputs were increased would your answers parts change reaches marginal product here d widget exhibit constant increasing or decreasing returns scale f tk tl tktl t as we have seen in places general cobb douglas two ak show fk fl fkk fll andfkl flk since each term greater than all terms positive except negative fkl e ande qk ql footnote dened elasticity expression be evaluated quasi concave from p one points such takes on value any specic convex looking involving least y linear combination these also involves think isoquant same higher but not if ll kk lk scaled up both pro...