11. 2*2階矩陣
,下列何者為真
(A) A=AT
(B) A2 =2A
(C) A3 =4I
(D) |A6 |=84
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統計: A(0), B(2), C(2), D(0), E(0) #1953459
統計: A(0), B(2), C(2), D(0), E(0) #1953459