1 . 行列式
的元素
的代数余子式的值为10,则
的模为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bddffc79910f16e3e2053e40eaf3337b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81fb134b2b48acc99213fff6ccfee65f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a139a0c4ff2ef9668d209d0e114ac0a.png)
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2 . 若矩阵
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c26a46e7879436d532af3f4b6e258a81.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3af993743a7396d44dbb4b918ca5a305.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0b8e774e3c1d2d5193b89c9fbe565f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c26a46e7879436d532af3f4b6e258a81.png)
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18-19高三上·上海·期中
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3 . 一般地,矩阵运算
,可以看作向量
经过矩阵
变换为向量
,我们把矩阵
叫做变换矩阵,向量
叫做向量
的像,已知向量
的像是
,则对应的变换矩阵是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62cf3965b5022246c83065a86e088003.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2335f5b3275c1a09ebd2bca16eabae3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1eaadd274b7644891f5550a799a11bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc78428faf1d1ab3a7d5f6e987e7aa24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1eaadd274b7644891f5550a799a11bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc78428faf1d1ab3a7d5f6e987e7aa24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2335f5b3275c1a09ebd2bca16eabae3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/343c5b5488ea925bdac5bf102be3e36d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d27068a57439cebe62d43138fc7feaf.png)
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18-19高三上·上海·期中
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4 . 已知
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e8b3e693a5537dc40c61d48c975f0bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
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5 . 已知矩阵
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c26a46e7879436d532af3f4b6e258a81.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39e4b577c5f4015fd9dd6d170759ad67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d38fe384ef8b2d9171adc184b434b6a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c26a46e7879436d532af3f4b6e258a81.png)
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6 . 若行列式
的第二行,第三列元素的代数余子式的值等于
,则实数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d3fcd15a55c2e9d1e335f3d8d055881.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81fb134b2b48acc99213fff6ccfee65f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
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54次组卷
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2卷引用:上海市吴淞中学2018-2019学年高二下学期期中数学试题
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7 . 能成为以行列形式表示的直线方程
的一个方向向量的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0703aecbb1d9fdc7e1c316fb71f0764b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76819a2ffc8834c0d9733a53fe4c5aee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41cb1bdfe66915c39f40963c186ab304.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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8 . 讨论关于
、
的方程组
解的情况.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0197ecd3de5ad9804e407a479cc38509.png)
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2019-11-10更新
|
83次组卷
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2卷引用:上海市七宝中学2019-2020学年高二上学期期中数学试题
9 .
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c26a46e7879436d532af3f4b6e258a81.png)
_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de51bb643f9c73a9941a8923f1a5f212.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22cd35b3f66cdeae8d9998d824194308.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c26a46e7879436d532af3f4b6e258a81.png)
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2019-11-10更新
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2卷引用:上海市嘉定区封浜高级中学2019-2020学年高二上学期期中数学试题
10 . 求矩阵
与
的乘积
及
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/925a209b5abd178c50d3ba749c8be36b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a72cfa3fc207c814c15d0259503f40f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dea2ae9d515f9ab351ad72306b776ee.png)
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2019-11-10更新
|
75次组卷
|
3卷引用:上海市新川中学2018-2019学年高二上学期期中数学试题