济南大学
- 对任意的同阶方阵A,B,都有(A+B)(A-B)=A2-B2.
- 设两个n阶方阵A与B有相同的特征多项式,则A与B 合同。
- 齐次线性方程组AX=0有非零解的充要条件是A中至少有一个列向量是其他列向量的线性组合。
- http://image.zhihuishu.com/zhs/onlineexam/ueditor/201908/dc7932d4599148909f8e22bb8b82c590.png
- n阶矩阵A 与对角矩阵相似的充分必要条件是A有n个线性无关的特征向量。
- http://image.zhihuishu.com/zhs/onlineexam/ueditor/201908/432de3e4709c4c3caa173aa3d6418e07.png
- 设两个n阶方阵A与B相似,则A与B等价。
- http://image.zhihuishu.com/zhs/onlineexam/ueditor/201908/32d39739c3c040d0a9e2f4a716406d95.png
- 设A,B均为n阶非零矩阵,且AB=O,则R(A),R(B)必有一个为0.
- http://image.zhihuishu.com/zhs/onlineexam/ueditor/201908/d641e0659c4449efb9e482964f4d900f.png
- 设A是m×n矩阵,B是n×m矩阵,则线性方程组(AB)X=0当n>m时仅有零解。
- http://image.zhihuishu.com/zhs/onlineexam/ueditor/201908/3978abf35a894283823972fff37f6b2b.png
- n阶矩阵A 与对角矩阵相似的充分必要条件是A有n个特征值。
- http://image.zhihuishu.com/zhs/onlineexam/ueditor/201908/b51d282702e84a47abbc4c6673c92150.png
- http://image.zhihuishu.com/zhs/onlineexam/ueditor/201908/d121031e457f4de28adc1db9f2e5c681.png
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- http://image.zhihuishu.com/zhs/onlineexam/ueditor/201908/31a8eef63f064015a1c808c058fd5a4a.png
- 设A为3阶矩阵,且|A|=2,|A+E|=3,则|-2A2-2A|=( ).
A:错 B:对
答案:错
A:对 B:错
答案:错
A:对 B:错
答案:对
A:错 B:对
答案:对
A:错 B:对
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:错
A:对 B:错
A:错 B:对
A:错 B:对
A:对 B:错
A:对 B:错
A:对 B:错
A:
B:
C:
D:
A:2
B:1
C:0 D:3
A:36,18,12 B:36,-18,12
C:36,18,-12
D:-36,18,12
A:1,-2,2
B:1,2,1
C:1,2,-2
D:-1,2,2
A:6
B:2
C:3
D:4
A: B: C: D:
A: B: C: D:
A: B:
C: D:
A: B: C: D:
A:f的秩为1 B:f既不正定,也不负定
C:f为负定的
D:f为正定的
A: B:
C:
D:
A:3
B:2
C:1
D:0
A: B: C: D:
A:
B: C:
D:
A:
B:
C:
D:
A:2
B:-1
C:0
D:1
A:2
B:3
C:4
D:1
A:
B:
C:
D:
A:-4
B:1
C:2
D:-3
A: B: C: D:
A:
B:
C:
D:
A: B: C: D:
A:(-1,1)
B:(-2,2) C:(2,-2)
D:(1,-1)
A:2,1,-2
B:2,1,2
C:-2,-1,2
D:2,-1,-2
A:-1/6, 1/6, -1/3
B:-1/6, -1/3, 1/6
C:1/6, 1/3, -1/6
D:1/6, -1/6 ,-1/3
A:
B: C: D:
A:4
B:1
C:2 D:-2
A:
B:
C: D:
A:1,-1,2
B:-1,1,-2
C:1,1,-2
D:-1,1,2
A: B: C: D:
A:1
B:4 C:3
D:2
A:6
B:3
C:2
D:1
A:-1,2,2
B:-1,2,1
C:1,-2,-2
D:1,-2,1
A:2
B:1
C:3
D:4
A:-12
B:48
C:12
D:-48
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