1 . 求方程组
的所有实数解.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88858ab423ea405988872c040e333127.png)
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2 . 方程组
的解的组数是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5ab0c7b6b0fb725f3cb7399445ba4fa.png)
A.5 | B.6 | C.7 | D.8 |
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3 . 若实数
使得对于每一个实数
,关于
的方程组
总有实数解,则
的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0fffbec1fe851795dfdd448bf0d165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1f3ddcacfcb5c9e90f1fda03c7bbaf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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4 . 已知方程组
的解为
和
则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14d4051d09c53a1aaba2a5a163f2cf73.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/650c0eeab66ae6d419a60370639b9a49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c5ea91edea7b5c202b34854c2597bc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a081187c5ffb1db6c6d894a8caedaca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14d4051d09c53a1aaba2a5a163f2cf73.png)
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5 . 方程组
的解
共有组.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b740f7f376f200993a09ffe56d0fa8a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0203b006524305c3d8ee0b6c34cd872b.png)
A.4 | B.2 | C.1 | D.0 |
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6 . 解方程组:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4235df43a31bd03a916f3628151503dd.png)
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7 . 方程组
的解为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e623ba91d9055beda518f76cad15f03c.png)
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8 . 设正数
、
满足
会且使得关于
的不等式
总有实数解.试求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42908e5970778a25f84f920bc896e5b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5da1c8f7af1168b6c05519be96bd304a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a38df5e6ff4bc77d7e035a1f28853fd.png)
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9 . 方程
恰有三个实数解,则
等于.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ec855c6054bddf2bcda80bc24095274.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.0 | B.0.5 | C.1 | D.![]() |
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10 . 已知关于
的不等式
的解集中恰有
个正整数.则实数
的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50f93e081c7c72f6840e3bf3a94175d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次