1 . 三阶行列式
中,元素3的代数余子式的值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78203978df655931ae029ff46f96e67c.png)
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2 . 行列式
中元素
的代数余子式的值为5,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd707b69a11f8de5566f23c1a2a9ff5a.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/486e0d46bdc25939b20b1ba8cd43a28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81fb134b2b48acc99213fff6ccfee65f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd707b69a11f8de5566f23c1a2a9ff5a.png)
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3 . 若矩阵
得
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5f1e5d29de6e4d72bfed62d9c14dde5.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bdc3eceb35151fd9be69e91f22e6120.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5f1e5d29de6e4d72bfed62d9c14dde5.png)
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名校
4 . 已知
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5085e3cdef9ea6c564e079f745d6fdb.png)
________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/133a58ec94627e42cf96f5a65141c2e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5085e3cdef9ea6c564e079f745d6fdb.png)
您最近一年使用:0次
2020-03-07更新
|
137次组卷
|
2卷引用:上海市进才中学2019-2020学年高二上学期期末数学试题
5 . 已知点
,点
的坐标
满足
,则点
与点
距离的最小值为_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8115c09f801cf0bb02293baef7bf137.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82a79a33a83a7ba57a34b5093d1d1d02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d9e9c927a16a7aa7a0ced89f035976d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
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6 . 将圆
上任意一点的横坐标变为原来的
,纵坐标不变,从而得到椭圆
,则椭圆
的焦点坐标是_____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90af67e4c90e378ade7773722e805b59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dac452fbb5ef6dd653e7fbbef639484.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
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7 . 若线性方程组
的增广矩阵为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edff1881635893293dd411ead8194aca.png)
_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a65bd6cdc598a67059dc4293a1694dc0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e6eeca71235856e3c8a3616c79f6138.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edff1881635893293dd411ead8194aca.png)
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8 . 行列式
中元素4的代数余子式的值记为
,则
的最小值是_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ff61ae54d5908e3571ddc409f6f22a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
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9 . 线性方程组
的增广矩阵是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f471f6b1cbd779c0009c5d1050a49456.png)
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名校
10 . 若线性方程组的增广矩阵是
,解为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f9fe114651ec816d2648e5ca40995f7.png)
_______ ;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e152892b5a17f01a14afbac3b442be05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f11adc9aa14a947927384994bb676605.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f9fe114651ec816d2648e5ca40995f7.png)
您最近一年使用:0次
2020-02-29更新
|
128次组卷
|
2卷引用:上海市曹杨二中2019-2020学年高二上学期期末数学试题