名校
解题方法
1 . 若直线
与直线
平行,则实数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ddd0fa0e8e46de28e0a5d88ebe899a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d5ddd57d275530887d3089265d02122.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
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2022高三·全国·专题练习
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2 . 已知行列式
=6,则
=__ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1294ff156395184b57b6baee6e3a9b58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9167e52350fa18200d3288eee158893c.png)
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3 . 已知
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cf0328d725b36cf68fd57545aa12610.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7506974b5211ea9f54ba53747f1da0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cf0328d725b36cf68fd57545aa12610.png)
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4 . 已知二元线性方程组
有无穷多解,则实数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9f0d77cc4b77b1f9533b8b0b325a848.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
您最近一年使用:0次
2022-04-18更新
|
155次组卷
|
2卷引用:上海市莘庄中学2022届高三下学期线上期中数学试题
5 . 若关于
的线性方程组的增广矩阵为
,该方程组的解为
,则
的值等于______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f640d4c6ea2591d85488d00d13da92d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb312945a38bba8f95bb992785c5651f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/815908b3b62f61a58ad2d99d3052435b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1019d4ad2e3fb4a7abb66e0e9e55b556.png)
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6 . 行列式
的展开式中,
的系数是___ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6281c465c18f466b3bc236a274e52bb5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
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7 . 若线性方程组的增广矩阵为
,其解为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/934d37c81b2266c7b86bcc11afaf5f91.png)
_____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11f97294d915e1dc77f34f94abb5ebd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80ddf5c595c0eff128a9c5026642fb25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/934d37c81b2266c7b86bcc11afaf5f91.png)
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8 . 关于
的方程组
的增广矩阵为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0fffbec1fe851795dfdd448bf0d165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72bd7153fea2591815b546236a425eed.png)
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9 . 已知
,则行列式
的值为___________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84effab46d6bfc6cb110963e027a6b7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47a362a3e4e7636e04dcb9eabe9b62ff.png)
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10 . 三阶行列式
中,元素2的代数余子式的值为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fde3b4f3a435a3f8cee4bcd151893c3d.png)
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