Reconsider the four-class classification problem discussed during class, crass I: {P, = [:], P, = [ ]}, class 2: { P, = [ =I l P, =[ ]}, class 3 {P, = [ ;'], p, =[ ;2 ]}, cla_ss 4: {v, = [ =:J p, = [ =l} a. Suppose we change the vector p3 to [-0}). Is the data still linearly separable? Show your answer graphically. Use MATLAB to implement a perceptron to solve this problem. Explain your results. b. Repeat part a. for p3 = [=i]