解题方法
1 . 已知函数
(
).
(1)若
恒成立,求实数
的取值范围;
(2)当
时,解关于
的不等式
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05f4ec4938c540a4a11dff445b94a932.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a57996290794e082b21d8f1dfc322a.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d752d8db8a05b3ec7312f6ac8b64a07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/940adbf54e96ecb2bb2637e5f976a3b0.png)
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昨日更新
|
7次组卷
|
2卷引用:甘肃省平凉市静宁县两校2022-2023学年高三上学期第一次质检考试数学(理科)试题
2 . 已知正实数x,y满足
,则xy的最大值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4edfef181ed229ed1a3bb2295be7db9.png)
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名校
3 . 方程
的解集为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd8536a585142d325936f96683edc5b5.png)
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名校
4 . 下列结论错误的是( )
A.若![]() ![]() | B.若![]() ![]() | C.若![]() ![]() | D.若![]() ![]() |
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5 . 若
,且
,则下列不等式一定成立的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/baca30d4248a82988890bd032d159b25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/432d77fe5ad3032d59a237dd94c8a638.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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2024-06-16更新
|
98次组卷
|
2卷引用:云南省曲靖市民族中学2023-2024学年高一上学期期末考试数学试卷
名校
解题方法
6 . 若实数
满足
,则称
比
远离
.
(1)若2比
远离1,求x的取值范围;
(2)设
,其中
,判断:
与
哪一个更远离
?并说明理由.
(3)若
,试问:
与
哪一个更远离
?并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d32d4403d0e81eacfbe429dc51f07f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b782dd2de9c9caa840838cd63d817de.png)
![](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/294f5ba74cdf695fc9a8a8e52f421328.png)
(1)若2比
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/792be5953f7752ccf49405231fa1ebc0.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36ea5e8fdf104e1cc8348c13a3cd1610.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8151ce405ce7dd9f691fd62cd59be57c.png)
![](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/cf298f00799cbf34b4db26f5f63af92f.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45900deae0489e87fe448948e8091c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29ebc856291255f2d4a6c20b982a2442.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
您最近一年使用:0次
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7 . 已知实数x,y满足
,
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83a395e76404aac7a24091d3f52ef1b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3547119aa7f2c5d4fd1573d84724d88.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
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解题方法
8 . 已知实数
,则下列不等式中一定正确的有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a297977dc2f26f5a3109f824fdc9699.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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解题方法
9 . 已知a,b均为正数,且
,则下列结论一定正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ca33a1b15b6da11d7dd2916a63e7588.png)
A.![]() | B.![]() |
C.![]() ![]() | D.![]() |
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解题方法
10 . 已知
,
,
均为正数
(1)求证:
;
(2)若
,求证:
.
![](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/071a7e733d466949ac935b4b8ee8d183.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8920a005c0b2e5b9cf0f916d1ce20329.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf43bd907a0590831d324d5eff38ea54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bd71a22dc65b28a0e6f8e4b9ee9e3b0.png)
您最近一年使用:0次