1 . 行列式
中,6的代数余子式的值是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af39283d10056a7a74d0eb923f4c0a8e.png)
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2019-11-08更新
|
290次组卷
|
7卷引用:上海市控江中学2018-2019学年高二上学期期中质量调研数学试题
名校
2 . 函数
的图象相邻的两对称轴之间的距离是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7aa12e9772d14eb886f855008005cdb.png)
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3 . 用行列式的方法解关于
的二元一次方程组
,并对解的情况进行讨论.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0fffbec1fe851795dfdd448bf0d165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6215b48ddcae362f60d5d2623a05f46b.png)
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2019-11-08更新
|
55次组卷
|
2卷引用:上海市嘉定区封浜高级中学2018-2019学年高二上学期期中数学试题
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4 . 命题:①
;
②矩阵
、
、![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5720485f3077f50bdea60ce4e2dde7e.png)
③若
、
不共线,且
,
,则
;
④若三元一次方程组有
,则该方程组有无穷多组解;
上述命题中正确的个数有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/177f821366827c5b94a7fd8065eadf76.png)
②矩阵
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98573a9a667b0eebb101d0811a4e761a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1611029414e220228e49fecefb40af47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5720485f3077f50bdea60ce4e2dde7e.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/772a19196fc427d3aac1164c927fe2e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fb0940732e5f30a76d39358add2709b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce9e0ce64ae045a2ca99a8a25dada3c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29c49e85355623dd104fae1231b6a408.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edf622559035c0764b67644604514c17.png)
④若三元一次方程组有
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90804c52cb76ba60389cddabd4dd8350.png)
上述命题中正确的个数有( )
A.0个 | B.1个 | C.2个 | D.3个 |
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5 . 已知
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a0468eec40a6f3f0f2162d21ac0e754.png)
____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37fee698da9e22cf746a1c05b16ce24b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a0468eec40a6f3f0f2162d21ac0e754.png)
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6 . 已知等比数列
的首项
,公比为
.
(1)求二价行列式
的值;
(2)试就
的不同取值情况,求解二元一次方程组
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1055b31cfe154ae3b9c4ed540bdb5973.png)
(1)求二价行列式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa5544e46205491f0b9b8394925242fb.png)
(2)试就
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a71672967131c3ce6e7640f1b368402.png)
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2020-02-01更新
|
139次组卷
|
2卷引用:上海市控江中学2017-2018学年高二上学期期中数学试题
名校
7 . 已知点
,
,
,
分别是基本单位向量.
(1)若点P是直线
的动点,且
,求点P的坐标
(2)若点
满足
且
,
,
是否存在自然数解,若存在,求出所有的自然数的解,若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50edfb9ed0d50d6f35ad6a130208d307.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9d31cd03879d5c69ff11d0923f1ee82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc1480988d26abda64d9a4d20674ab76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89cdb00326a922074494892c166aeefe.png)
(1)若点P是直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08b9f0b9e53a83e68f5fec944f343119.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fe4162b349b2f42d38580e1e13396b4.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aee82283f06cedef32eb15b87964f5d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb6132011fb326fbc823742be48e14f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1087d3fd0e25fa56fa136290961b479.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1100379a4385b9ce064847bc21760adc.png)
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8 . 在向量
的右边乘以一个矩阵
,按向量的乘法规则相乘以后得到一个新的向量
,我们把这个运算过程称为对向量
实施了一个右矩阵变换.直线
:
上任意一点
确定向量
(O为坐标原点),通过矩阵
对向量
实施右矩阵变换后得到向量
,点
的坐标
满足
,若直线
:
和
:
相交于点
,则过点
,
的直线
的方程是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3541b6d195c1412a795cb96b214bf30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45dc529fbb274df5e13368430cea5356.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31e15de75a2a1ac10c08fc232d8b3df9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/969604545902c9a66549a4a44ec3a3c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9eebeb0c65327c1472d14023a5027778.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aee82283f06cedef32eb15b87964f5d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82973c2b6d1c407318545f1c0f32ec2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98d4b90a7896d48654f2ff4c6e15059d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82973c2b6d1c407318545f1c0f32ec2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9545c90761a71795fe55e93a6fca0a16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2708fa6298e52f617383efc175b71ddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23b4f86e48e2b0d63c1865c60ed1e4d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2af6153cf4123be03fbd6883db5708eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/465666f216437b32e4c4912b96bc2c7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9fce9427c9b17e4d3cda0c3ff3e2e14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/788af67a097996e4cf1c32ecad514524.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37e3702ac7af8e3c028ecb8c8ea584d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9ad2f69a1087da1bd661f440151eb4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2775432a1df10f13d04c587279a5a38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7f2813ee8f26cca880b6427f5f545d0.png)
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9 . 已知可逆矩阵
的逆矩阵为
,求
的特征值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9693f6d4e049b6f15b7dd2dcf38864c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2655762a4c8537c3fdec1aef47dc2343.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a84646168f0afc4380043a52b818c35.png)
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10 . 设
分别是
的三边,行列式
.
(1)求字母
的代数余子式的展开式;
(2)若(1)的值为0,判断直线
与
的位置关系.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d1e3da77d79a473966026111f5d75c.png)
(1)求字母
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(2)若(1)的值为0,判断直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c05960d80943c9d9d6efefa6d00d3a47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e60cc87d56555331d3629eb04b2782c.png)
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