Determine the General Equilibrium considering: U^A = X² Y B=XY², is subject to pX + Y = p / 4 + 3/4 for the case of individual A and pX + Y = 3p / 4 + 1/4 for the case of individual B.

a) Derive the Lay of Walras

b) Determine the optimal tariff

c) Explain the Stolper-Samuelson theorem on the 2-panel graph

d) In the model of a good and two factors, represent a specific tax on work.