用到公式Aij=(-1)i+jMij
M12=(x 1)(4 5)
A12=0=(-1)1+2(x 1)(4 5)=4/5
M21=(0 2)(x 5)=(0 2)(4/5 5)=8/5
A21=(-1)2+1(0 2)(4/5 5)=8/5
如果(1 0 2)(x 3 1)(4 x 5)代數(shù)余子式A12=0,則代數(shù)余子式A21=____.
如果(1 0 2)(x 3 1)(4 x 5)代數(shù)余子式A12=0,則代數(shù)余子式A21=____.
其他人氣:623 ℃時間:2020-05-15 15:39:45
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