奥鹏期末考试备考题集(含答案)65709

65709--奥鹏期末考试备考题集(含答案)65709奥鹏期末考试题库合集

单选题：

（1）设A，B均为n阶可逆矩阵，则下列各式中不正确的是( )．

A.

src=\1122123456067.png?Expires=1889714099&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=YRcyK7NxyyQ+9/tWHlIvATCGxYo=\

B.

src=\1122123456431.png?Expires=1889714096&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=PMmTIs7+mAJJq5B9Rn/J+FCS/jo=\

C.

src=\1122123456595.png?Expires=1889714096&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=z2n8EiJfKEp5ERnyIxGVbmC+ZLA=\

D.

src=\1122123500145.png?Expires=1889714100&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=ZO7Dp/BKBZFbm3eHLQkOFnm4E28=\ 正确答案：D

（2）设

src=\23457151.png?Expires=1889714100&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=DjPTWLjHXXjSkJ6ExL+wZOWKSuM=\是

src=\23457302.png?Expires=1889714100&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=Ia+r1/jAjaoDBX7uU6N2iyG4RSQ=\矩阵，

src=\23500851.png?Expires=1889714097&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=tZIFr7QAfo/0puLERmZZ/CUX0CI=\是

src=\23457621.png?Expires=1889714101&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=C2wbuVaXGYYvBbrgHLA2EneDk0Q=\矩阵，

1

src=\23501170.png?Expires=1889714097&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=Zk87nhH7FJJbVLKddY8EaiYxk/E=\是

src=\23501398.png?Expires=1889714098&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=Lr8J872cEi9vTBVkCsLUwtmUEkQ=\矩阵，则下列运算有意义的是( )．

A.

src=\1122123458818.png?Expires=1889714098&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=At7YuAPpesZX9tBW3DAy+REE/UU=\

B.

src=\1122123458965.png?Expires=1889714099&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=Z7xy2NNAkYjdTy+8tJg2G9vZ3RQ=\

C.

src=\1122123459121.png?Expires=1889714099&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=a6DMDYAuEHHHL5Ku86dbEA3wseg=\

D.

src=\1122123502673.png?Expires=1889714102&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=7nF3j8NSvdQKRDZY01HutmHiJtg=\ 正确答案：C

（3）若向量

src=\23459452.png?Expires=1889714103&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=kIZcAMfiDcmnriXzTUIP2wmYSss=\与

src=\23503033.png?Expires=1889714099&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=aQ/q8ZT4xLznEU0h8QvqePgR5/0=\正交，则

src=\23459807.png?Expires=1889714103&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=3F9ZN4AfiGAzd2zTqMRwTMVtuoM=\ )．

A.

src=\

2

1122123503361.png?Expires=1889714103&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=KYmaNp82ieU3kJwtZPLqK9U+jJU=\

B.

src=\1122123503539.png?Expires=1889714103&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=/6UqvBHOUYVfv4Tp+imAz/QDERA=\

C.

src=\1122123500307.png?Expires=1889714100&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=5zQ8wY2eNSgaI78cFoJVdv1TtZ8=\

D.

src=\1122123500451.png?Expires=1889714100&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=tr2to6glzceWczhCJ+ChHX1X9BE=\ 正确答案：B

（4）线性方程组

src=\23500596.png?Expires=1889714100&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=fSNG20ileRua7r+thprL9Repxmg=\若

src=\23504137.png?Expires=1889714104&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=ULQ5tHHI77/oY1Pq4QaUVa4cjkA=\是

src=\23504295.png?Expires=1889714101&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=zs6xh/stoUizEFue+ljCf1SrN0w=\阶方阵

src=\23501067.png?Expires=1889714104&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=Y6K3EksueJgZ2JGwpk8LSL1kSUA=\，则该方程组( )．

A. 有唯一解 B. 有无穷多解 C. 无解

D. 不能确定是否解

正确答案：B

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