can anyone provide a detailed answer?

Q2 Consider the following demand function, 33 = a. bQ, Q = q1 + :33 + Q3, where q, denotes rm i's output, 1' = 1,2,3; a. and b are positive parameters. The three rms choose prices simultaneously and non cooperatively {Bertrand competition). Firm i's marginal cost of production is constant and equal to 6,: > 0. Assume that c1 = c2 = 63 = c. a) Derive the best response function of each rm. Assume now that cl g ca and that c1 5 133. b) Find the Bertrand-Nash equilibrium price. c) Show that, if :1