Mathematics
Senior High
為什麼畫黃線的地方一定要這樣反過來寫？
【常考題】
例題22
已知二階方陣A與B的反方陣分別為4:
B¯
3 4
5
,
求AB的反方陣(AB)'。
78
例題22 2(1.03)
·美宝去乘由(S)
因為(AB)(B'A') =I,所以AB的反方陣為
B-¹A-¹
PE 00
5612 23 34
7 8 34
HipH
-L
=
31 46
O
1.03)
× 28
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