北华大学
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- 矩阵的秩就是方程组约束条件的个数.
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- 设三阶方阵A的三个特征值为1,2,3. 则|A+E|=24
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- 齐次线性方程组Ax=0有非零解的充分必要条件是系数矩阵A的任一个列向量必是其余列向量的线性组合
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- 排列32541的逆序数是5。
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- A、B均为n阶方阵,若A与B等价,则不正确的是( )
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- 给定六元排列123564.则下列叙述不正确的是( ).
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- 设A、B、C为n阶方阵,且ABC=E,则必有( )。
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- 设A是n阶方阵,其秩r
A:任意r个行向量线性无关 B:任意r个行向量都构成最大线性无关向量组 C:任意一个行向量都可由其余r个行向量线性表示 D:必有r个行向量线性无关
A:错 B:对
答案:对
A:对 B:错
答案:对
A:对 B:错
答案:对
A:错 B:对
答案:错
A:对 B:错
答案:对
A:错 B:对
答案:对
A:对 B:错
答案:对
A:对 B:错
答案:对
A:对 B:错
答案:对
A:对 B:错
A:对 B:错
A:对 B:错
A:错 B:对
A:错 B:对
A:错 B:对
A:错 B:对
A:对 B:错
A:对 B:错
A:错 B:对
A:错 B:对
A:对 B:错
A:对 B:错
A:错 B:对
A:对 B:错
A:错 B:对
A:错 B:对
A:对 B:错
A:对 B:错
A:错 B:对
A:对 B:错
A:错 B:对
A:对 B:错
A:对 B:错
A:对 B:错
A:对 B:错
A:错 B:对
A:错 B:对
A:错 B:对
A:错 B:对
A:错 B:对
A:A B:C C:B D:D
A:A B:C C:B D:D
A:A B:C C:D D:B
A:C B:A C:B D:D
A:A与B的特征值相同 B:A与B相似 C:A与B合同 D:R(A)= R(B)
A:B B:A C:D D:C
A:C B:B C:A D:D
A:A为正交阵 B:A的行列式为1或-1 C:A为初等阵 D:A为对称阵
A:D B:C C:B D:A
A:该排列的逆序数为0 B:该排列既不是奇排列也不是偶排列 C:该排列为偶排列 D:该排列为奇排列
A:B B:D C:C D:A
A:0 B:-2 C:1 D:2
A:A B:D C:B D:C
A:B B:A C:D D:C
A:ACB=E B:BCA=E C:BAC=E D:CBA=E
A:B B:D C:C D:A
A:C B:B C:D D:A
A:9 B:0 C:-3 D:2
A:D B:B C:C D:A
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