3) Consider the Bidirectional Associative Memory Neural Network that described by the following set of differential equations : u(t)= -Au(t) + Wg(z(t))+I z(t)=-Bz(t) +Vg(u(t))+J a) Define the equilibrium equation for this neural network model. (10 p.) b) Shift the equilibrium point of the neural network system to the origin. (20 p.)