2 0 Let A = 1 3 4 6 (a) Use the inversion algorithm to find the inverse of A. (b) Use the matrix inverse method and the result of (a) to solve the system of linear equations + + = R+3, 2 x , + 3x7 + 5X3 4. + 6*3 = 4. (c) If C is a 3x3 matrix such that det ( A C) = det (4A" ), find det (C)