A=(a b c d)라면,A역행렬O=ad≠bc일테고B=(d e f g)면B역행렬O=dg≠ef입니다.그럼AB=(ae+bg af+bh ce+dg cf+dh)고(ae+bg)(cf+dh)≠(af+bh)(ce+dg)니까AB역행렬O.
[무물보AI] 답변 로딩중...