解题方法
1 . 已知关于
的不等式
(其中
)在R上恒成立,则有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcaea215b59d427c7659abcf70222c33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20849c00c47cbdc43f18d53341b6c4e5.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
2 . 已知
且
,则
的最大值为______ ,最小值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e64541d7f445079207b6f671adc7d662.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd4daab93ab62075713f430a2304309b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29ebc856291255f2d4a6c20b982a2442.png)
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3 . 已知等比数列的前两项分别为1,-2,则该数列的第4项为( )
A.4 | B.-4 | C.8 | D.-8 |
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2024-03-02更新
|
522次组卷
|
3卷引用:贵州省黔东南州2023-2024学年高二上学期期末检测数学试题
解题方法
4 . 已知
,则
的最小值是___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c7e1486683721718ed755b565db107e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18f0281e6bbdbe08beeccb55adf84536.png)
您最近一年使用:0次
名校
5 . 已知各项都为正数的等比数列
满足
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7de061fa9679f45a3c9af610a8c323f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d97db5bd141353ef541007332da8779.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dbd9ff686703cad03aa383e5fec21.png)
A.6 | B.12 | C.24 | D.48 |
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解题方法
6 . 下列命题为真命题的是( )
A.若![]() ![]() | B.若![]() ![]() |
C.若![]() ![]() | D.若![]() ![]() |
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7 . 不等式
的解集是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7aa3f9864bb027c49c7dfb99dbaa763c.png)
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8 . 已知
是等比数列,且
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dbd9ff686703cad03aa383e5fec21.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb334e165679c6cb500c994cffa47147.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ff6de1ee895470114429ac01726f405.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dbd9ff686703cad03aa383e5fec21.png)
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解题方法
9 . 已知数列
的首项
,且满足
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86fc336b4a83bf6d66c4afcc431597f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66cb2fc959e9831ee49479527e64a969.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dbd9ff686703cad03aa383e5fec21.png)
A.![]() | B.![]() | C.16 | D.19 |
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10 . 已知等差数列
各项均为正整数,
,
,则其公差d为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c902b38e71bf7cd4eb2988ba8ac8c533.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/820a613cf08fcdc92ae0afabd125453d.png)
A.0 | B.1 | C.2 | D.4 |
您最近一年使用:0次