1 . 若方程
的两个根分别是2,3,则方程
的根分别为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f43e49552a5099a8b2a442247c65a243.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/567a447426add368efd0199c1bab8ab6.png)
A.![]() ![]() | B.![]() ![]() |
C.![]() ![]() | D.![]() ![]() |
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2024-05-28更新
|
34次组卷
|
2卷引用:贵州省铜仁市第八中学2023-2024学年高一上学期期中考试数学试题
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解题方法
2 . 若正整数x,y满足
,则
的最小值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/200904bec6711851fd27431f7c533197.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16f0b84ee4ed90face0993d4f4dda379.png)
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3 . 已知关于x的方程
有两个实数根
,若
,求实数m的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0696dae980c6542aaef11d501a3da107.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6483c4c4e2815a2b35e87323882106bc.png)
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4 . 已知参数k为非零实数,记
与
为关于x,y的方程组
的两组不同实数解;记
与
为关于x,y的方程组
的两组不同实数解.
(1)求证:
,
;
(2)求
的值;
(3)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3396ead2a01ebd1d6134732541008a7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/734a03b0e1c4de970668548ebb944fc0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a9c72eefda9b1192a4bc6982b52cc6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e78adf83070612501d95c80cd2f2bb45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e377ec55e3668e1daa9a58e0091930fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb66608b19763b0ebf13861149f2e10b.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8997257fd8e9f1286004489eb5ac4c42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a21b23d1bddc1acc93debcf1c1747ca7.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b41a0384d42a7a75ea168f57262eaef1.png)
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/301dec441538499bc41fefcc53586841.png)
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5 . 若
是
上的减函数,则有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d679e320c14ec8a22b6035abd2e97180.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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6 . 若关于x的方程
只有唯一解,则实数m的取值范围为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13f153dc95efca0dbd9e0936e8500b86.png)
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7 . 已知
,
有两个不同的根
,
,且
.
(1)若
,求b的值;
(2)求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5109b591b55b04ab757a7abb47bb8cc3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd689fbacfbe6c1bd0953521bbf3638b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4acb7a1cb7216c0db81942c0d1501732.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24cb0eeec126e979ac92dc412e3ff66f.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c847f857b8d1788d4ba414b82840ef5e.png)
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2023-11-19更新
|
63次组卷
|
4卷引用:河南省八地市2023-2024学年高一上学期期中联考数学试题
名校
8 . 已知
,则
的最小值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e365a717f15fe62f457b226382ed22c.png)
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9 . 已知关于x的方程
的两个实数根是
,
,若
,则实数m的值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87ce6b78bbaee2494ae9cf584de4b18a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62bdaecba44c33044ad3ad3e271d2884.png)
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解题方法
10 . 设x、y、z为互不相同的实数,对于
﹐
(1)令
,用a、b表示![](https://staticzujuan.xkw.com/quesimg/Upload/formula/799ad978a97167d465bb03a4ea103104.png)
(2)求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64dbca95a7a27da4e250d1e31e17cc32.png)
(1)令
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97cd793c3f4271b12387e261afe21b94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/799ad978a97167d465bb03a4ea103104.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64dbca95a7a27da4e250d1e31e17cc32.png)
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