Given f(x)=2x1^(1/4)x2^(1/4),

(a) Calculate the revenue function and the profit function with input demand function and output demand function

(b) Find maximum revenue and maximum profit with (w1, w2, p) = (2,18, 20) and (w1, w2, p) = (4, 18,20)

(c) Plot the Isoprofit lines with the given data and production function.