Consider the following Cobb-Douglas functions.Do not check the second-order sufficient conditions (but
you can separately for extra practice).
a.Maximize the utility function u(r,y)=r..25 subject to budget 8r+5y=680.
b.Find the optimal level of inputs for the production function q(,k)=10k4.710.1 subject to P+Pk=
4000,where P=10 and P 28