1. Use the inverse matrix to solve the linear following linear systems. Look carefully at the linear systems to significantly reduce the workload. (a) 2x + 3y + z = 4 3x + 3y + z = 8 2x + 4y + z = 5 (b) 2x + 3y + z = 0 3x + 3y + z = 0 2x + 4y + z = 0

Fig: 1