2. A modified-Cournot duopoly game The market demand is 1 P(q1, 92) = 10- q1 + 5 92. The cost function for firm i, i = 1,2, is qt . a. Are goods 1 and 2 economic substitutes or economic complements? b. Draw a graph of the best-response functions. c. Are the two firm's strategies substitutes or strategic complements? d. What is the Nash equilibrium