1 . 将方程组
的系数写成矩阵形式为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1fc724b39379a76c6fdc3a5a9ddadf8.png)
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2 . 矩阵
的第2行第3列的元素![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f6dcb1ee9f7d8112e8701e8a4c7b5b9.png)
_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9124241cacbc869394e2fcbc1efa084.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f6dcb1ee9f7d8112e8701e8a4c7b5b9.png)
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3 . 方程组
的增广矩阵是________ ,系数矩阵是___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78758f752f4122c7bad507a3127b20c1.png)
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4 . ![](https://staticzujuan.xkw.com/quesimg/Upload/formula/308581988844a2df0a39af695433c87d.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/308581988844a2df0a39af695433c87d.png)
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5 . ![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a753aea2c89e1d76507bec83c2442aa3.png)
_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a753aea2c89e1d76507bec83c2442aa3.png)
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6 . ![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9016dbf751bff47dcac7a2d869ce532.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9016dbf751bff47dcac7a2d869ce532.png)
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7 . ![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02d42440e9b7e2407a80376b2b69e43c.png)
_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02d42440e9b7e2407a80376b2b69e43c.png)
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8 . 已知
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c26a46e7879436d532af3f4b6e258a81.png)
______ ;![](https://staticzujuan.xkw.com/quesimg/Upload/formula/450406e17a9b33a778e0b3d57d9ac253.png)
_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23dd7e8d7409a2afdf7e40d0e707f40b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f49ad1bc2aaa5b52936689f4a8252a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c26a46e7879436d532af3f4b6e258a81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/450406e17a9b33a778e0b3d57d9ac253.png)
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9 . 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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10 . 已知![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47815720489d303ac3cadc22b20cff0a.png)
_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47815720489d303ac3cadc22b20cff0a.png)
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