QUESTION 5 Given the function f (x.y) = In(x2-y2) , find the value of f . (2, 1) 4 In3 w / QUESTION 6 Given the production function P (x.y) =x2+ 32 + 3xy + 400 where x represents units of labor and y represents units of capital, find the marginal productivi 25 0 29 0 35 O 31 QUESTION 7 Find f (x.y.z) for the function -+ -+ O O O QUESTION 8 Find f for the function f (x,y) =xe> O 2veyz O O O 2re)2