1 . 已知矩阵
,矩阵
.若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39b8316f9fe3d151242186bbd2510965.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c242127408111d884474ce671c102436.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c27c96d5d4bd9842ecc908919b535cae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
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2 . 三阶行列式
中元素
的代数余子式的值等于___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/731412de319ac3fa6dba33bfd520e338.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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3 . 以下向量中,可以作为直线
的一个方向向量是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ed6eae10db11b6cff33b84a7ab57cd5.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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4 . 用行列式讨论下列关于
、
、
的方程组
的解的情况,并求出相应的解.
![](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/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec8ba705e34e595b58609289bc36cb03.png)
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15-16高二上·上海浦东新·期中
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5 . 已知命题
:
,其中
为常数,命题
:把三阶行列式
中第一行,第二列元素的代数余子式记为
,且函数
在
上单调递增,若命题
是真命题,而命题
是假命题,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/200b1799e65e840e5255a0012021c1a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df1c01d74319a85ece4d2789f2e6b9ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f18c7371a5f0c166488058a75f93d01a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
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6 . 已知
是增广矩阵为
的二元一次方程组的解,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4bbb62c0a0c1a6f1974f2494b5c845b.png)
________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7eb563be0140b1b558bfc1e9a5e09468.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d120bee731296846e586857a52128a7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4bbb62c0a0c1a6f1974f2494b5c845b.png)
您最近一年使用:0次
2018-12-05更新
|
104次组卷
|
2卷引用:【全国百强校】上海市复旦附中2018-2019学年高二上学期期中考试数学试题
14-15高二上·上海徐汇·期中
名校
7 . 已知矩阵
,
,
,
,若PQMN.
(1) 写出PQMN所表示的关于x、y的二元一次方程组;
(2) 用行列式解上述二元一次方程组.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c29f56c901d052f8009e4e1e83896d5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff38224c367aa75686cf46e6c7292b9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d756825f18f58133b0883db98c75df2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5807b07695c82675d08ff36c2fcd63e.png)
(1) 写出PQMN所表示的关于x、y的二元一次方程组;
(2) 用行列式解上述二元一次方程组.
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8 . 在数列
中,
且
,若
是
的前n项和,则
_______________.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/039e4fe671d61e59b96ee525c9df43e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b591ab657a9cfd908d6011ef5afa2318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58abe92020722722506c7b12c7879ac5.png)
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9 . 已知矩阵
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96ad29a5d74b18b5ebd3c21b211b11c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62fa3622b9dd03bf8de5459e09f7a288.png)
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10 . 增广矩阵为
的二元一次方程组的实数解是
,则
+
=__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca8bda77b71990fc230746cef1d3a2e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f926bbdf9f1c8044a52990e9084ea04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
您最近一年使用:0次
2018-01-12更新
|
264次组卷
|
3卷引用:上海市位育中学2017-2018学年高二第一学期期中考试数学试卷