\"UCSHIJH 0 1 0 1 2 (a) Let M = (2) g _21 i be amatrix, where p is a real number. 0 4 P 1 Find all possible values of p for which the inverse matrix of M exists. [7] (b) Consider the following system of linear equations. x2y+32+ w=2 x+4y+323w=6 3x7y+62+4w=2 Solve the above linear system by Gaussian elimination and express the general solution in vector form. [9]