1 . 三阶行列式
中第
行第
列元素的代数余子式的值小于
,则实数
的取值范围为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86bbbd0dfc62ed9125fa80bb762ac1d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c95b6be4554f03bf496092f1acdfbb89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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名校
2 . 若线性方程组的增广矩阵为
,解为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/934d37c81b2266c7b86bcc11afaf5f91.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b94dcf94f8a226a25145162429aaedb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/203dfe536ac65ff8405862204fca6ea7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/934d37c81b2266c7b86bcc11afaf5f91.png)
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3 . 若关于
、
的二元一次线性方程组
的增广矩阵是
,且
是该线性方程组的解,则三阶行列式
中第
行第
列的元素的代数余子式的值是___________ .
![](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/a65bd6cdc598a67059dc4293a1694dc0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d03309a5d79f2598a330aa7e1cbcc7ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f93169d14edf4ebc44b9695763527c71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c01263f8a6f269b7e28eba8de07ac1dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
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4 . 若
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b84fa1487edf1b2bb4f0091f3a32e58.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f952be9744b877422aaf7caf95c6d991.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66cc239e16520720a0f89ddd8853f453.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b84fa1487edf1b2bb4f0091f3a32e58.png)
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5 . 关于
、
的二元线性方程组
的增广矩阵经过变换,最后得到的矩阵为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/934d37c81b2266c7b86bcc11afaf5f91.png)
_________ .
![](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/fbdf69d50dffe8bdae2580c7e71e5eae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f26767c2e9097931dc4c0c5cdb23d7b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/934d37c81b2266c7b86bcc11afaf5f91.png)
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6 . 若实数a、b、c、d满足矩阵等式
,则行列式
的值____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5b2fe4437dab8c17b332f3256407fa8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b29320f184b4027471a2951527457453.png)
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7 . ![](https://staticzujuan.xkw.com/quesimg/Upload/formula/308581988844a2df0a39af695433c87d.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/308581988844a2df0a39af695433c87d.png)
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8 . 已知
,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13424677b31f76845aceb90302e75f1b.png)
________ ;![](https://staticzujuan.xkw.com/quesimg/Upload/formula/894fa56c780bb65edda02d64af12aa69.png)
_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92897241e445562143ff5189fda68779.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cae1fb5e85d42b55218f018a13b09d0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46626211c275bb205b16779387369fd6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13424677b31f76845aceb90302e75f1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/894fa56c780bb65edda02d64af12aa69.png)
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16-17高三上·上海浦东新·期中
名校
9 . 矩阵的一种运算
,该运算的几何意义为平面上的点
在矩阵
的作用下变换成点
,若曲线
在矩阵
的作用下变换成曲线
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4753f4a4456d0df13843b71015bfa14.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c158a0dafc1ed72d4cd92ce8be537d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0203b006524305c3d8ee0b6c34cd872b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1eaadd274b7644891f5550a799a11bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f989e3dc5d752aa2638069f325807db0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bb99abc26156c2dfe6941041e7e9f49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5339be0bc4d6f090b6de7112636d500.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/760a793ad8dadeba59aef81106e95288.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4753f4a4456d0df13843b71015bfa14.png)
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10 . 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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