a) The two 3 x 4 matrices b) The linear system has a unique solution.c) If d) If A is a symmetric n x n matrix and B is n x m, then BtAB is symmetric m x m matrix.e) Q−2: [4+4+2 marks]a) Solve the linear system by row-reducing the corresponding augmented matrix: b) Find the determinant of the coefficient matrix A.c) Find .Q−3: [4+3+3 marks] Let and