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1 . 已知关于x,y的一元二次方程组:
,当实数m为何值时,并在有解时求出方程组的解.
(1)方程组有唯一解?
(2)方程组无解?
(3)方程组有无穷多解?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2c2fc02b7c1253ce4976672e5cecbbf.png)
(1)方程组有唯一解?
(2)方程组无解?
(3)方程组有无穷多解?
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19-20高二上·上海浦东新·阶段练习
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2 . 若增广矩阵
的线性方程组无解,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/935ae36f1bff88fc927474dfcf004709.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
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3 . 若线性方程组
的增广矩阵为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edff1881635893293dd411ead8194aca.png)
_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a65bd6cdc598a67059dc4293a1694dc0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e6eeca71235856e3c8a3616c79f6138.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edff1881635893293dd411ead8194aca.png)
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4 . 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)
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2018-12-05更新
|
105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
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5 . 已知线性方程组的增广矩阵为
若该线性方程组的解为
则实数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
___ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8002d291ce133b2c804674877123491.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b9ed8e191353926e184d6f78f6bfc39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbc3c6f830496d03008ec7a759f61246.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e40012015d02b09a45ec74585e12b62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
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2019-11-06更新
|
85次组卷
|
3卷引用:上海市进才中学2017-2018学年高二上学期期中数学试题
18-19高二上·上海浦东新·期末
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6 . 关于
、
的二次一次方程组
,其中行列式
为
![](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/9866a7892702089fed0914cc2042dbe6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/858c3c4dc236e86e671b1c68798dfbdd.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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7 . 解关于
、
的方程组
,并对解的情况进行讨论.
![](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/6c8bec01469ad10491be9a633ea52ca0.png)
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8 . 解方程组
,并求使得
的实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bf9e63b8ffb13fe38a51e6fd57303eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f23be9638a5d5934d0a3c55f3156b81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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9 .
,
,
,如果
、
、
三点共线,则
的值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/188432484e5072404b3b4d0791edf35d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d49a31f8e8dba418bd5d886998ef8d17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be2f117dc9adcb8fa7acf25bd2cbf283.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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10 . 已知一个关于
的二元一次方程组的增广矩阵为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0fffbec1fe851795dfdd448bf0d165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c6bc358292729f6b12061039e092dfa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
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