搜题
问题   更新时间2023/4/3 12:59:00

求矩阵A=[2 2 3]的逆矩阵.
[1 -1 0]
[-1 2 1]

答案:由于[2 2 3 1 0 0] [1 -1 0 0 1 0] [1 -1 0 0 1 0] → [0 4 3 1 -2 0] → [-1 2 1 0 0 1] [0 1 1 0 1 1] [1 -1 0 0 1 0] [1 0 0 1 -4 -3] [0 1 1 0 1 1]→ [0 1 0 1 -5 -3] [0 0 -1 1 -6 -4] [0 0 1 -1 6 4 ] [1 -4 -3] 故A-1= [1 -5 -3] [-1 6 4 ]
王老师:19139051760(拨打)