名校
1 . 已知
,则以下不等式成立的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3dfd8a65429565cc24a2c12631f7d8.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2024-03-01更新
|
311次组卷
|
2卷引用:河南省中原名校2024届高三下学期3月联考数学试题
名校
解题方法
2 . (1)已知
,
,
,证明:
;
(2)证明:当
,
时,有
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/061813f1ec633c5c4c393c4de7938322.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/131ac7eb1e911c9a40e84235bf3742ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/743521dbdd63eb1ccda627d0f695db05.png)
(2)证明:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37c84b49231d0344d0813a7bbd2acdaa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a14a2671cb729ab8919ad06008671d69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b49236cb8b41994a11aee4998576dd48.png)
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名校
解题方法
3 . 选用恰当的证明方法,证明下列不等式.
(1)已知
均为正数,且
,求证:
;
(2)已知
,求证:
.
(1)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0fffbec1fe851795dfdd448bf0d165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5558c083d34cbb0a58d3ce1dc6f5778e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/984faa7ae8bb62ce8157b0b60dc84508.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a0c4c098615c6bc7e6dcf72e5b5201a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e10cc5dd849caccce37fe98a26c598.png)
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名校
解题方法
4 . 已知正数
,
满足
.
(1)求
的最小值;
(2)若正数
满足
,证明:
与
之和为定值,且
.
![](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/5be97cd1c7111b654d87d8fbb63b6a84.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29e29dbe0f9a9c78de90afcfc2ea96a5.png)
(2)若正数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6057c1f4d6840d9a3e5021d63621519.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd1810555c0c28fe352841322b85bbc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd2ed49b4be25eac88aa2af01aa84c15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/665be0848dec4920536fd38af1f67063.png)
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2023-10-14更新
|
243次组卷
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5卷引用:河南省2023-2024学年高一上学期第二次联考数学试题
5 . 已知
.
(1)若
,证明:
.
(2)若
,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2684b72f9f38f5046c8ecd4280b7b14b.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2feac7a3eaffd79d927bad4a572b5173.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09ea0bf27de07b4699b1a5abee1ed7ff.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e3b9cf82c01d09dacc4d1ce888652b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3910a0f217d8109b9467f740fc84a73d.png)
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2023-09-19更新
|
1145次组卷
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6卷引用:河南省南阳市邓州市邓州春雨国文学校2023-2024学年高一上学期9月月考数学试题
河南省南阳市邓州市邓州春雨国文学校2023-2024学年高一上学期9月月考数学试题河南省新乡市卫辉市第一中学等2校2022-2023学年高一上学期期末数学试题浙江省绍兴蕺山外国语学校2023-2024学年高一上学期9月检测数学试题(已下线)高一上学期期末复习【第二章 一元二次函数、方程和不等式】(拔尖篇)-举一反三系列(已下线)高一上学期期末数学试卷(巩固篇)-举一反三系列(已下线)第03讲:不等式性质与基本不等式-《考点·题型·难点》期末高效复习
6 . 已知直线
交曲线
于第一象限的
,
两点,
,O为坐标原点,过A,B分别作曲线
的切线,斜率分别为
,
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/082990da1f11a1a7be4fc3935c0d526e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2eae1b87c23b45ce5e5e74d5b1d73234.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12a3efb79f35db8448f3391252ab7d4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8df332f01628130c084fd46aaca0a4b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33bd24e647a626899a243a3f3984f90a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2eae1b87c23b45ce5e5e74d5b1d73234.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
A.k的取值范围是![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
7 . 已知x,y,z为正数,证明:
(1)若
,则
;
(2)若
,则
.
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f0ce87e151aa5663527dbdd7d27477d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16be74781075be6aa972a06a5926cdda.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f76b24b4dacca159e8806e936fb58171.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75af50130fe2d460ab7734716f8b2b30.png)
您最近一年使用:0次
名校
8 . 下列四个命题中,是真命题的是( )
A.![]() ![]() ![]() |
B.![]() ![]() |
C.若![]() ![]() ![]() |
D.当![]() ![]() ![]() |
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2023-08-20更新
|
798次组卷
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6卷引用:河南省南阳市第五中学校2023-2024学年高一上学期第一次月考数学试题
名校
解题方法
9 . 已知a,b,c都是正数,且
,证明:
(1)
;
(2)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41f5ec9fb05c603a52cc602410880982.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bab5eeb29f8d1c530dc582f1812460.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/439ebfa9ddc8ccb9d2971f48b447a308.png)
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2023-02-24更新
|
259次组卷
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2卷引用:河南省top20名校联盟2023届高三下学期2月联考理科数学试题
名校
解题方法
10 . 已知
,
,且
.
(1)证明:
;
(2)若
,
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22dd8b3dc4c609bab82d356a5cc2208d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dd0914dc4d4c7f75710ff460a286fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a7dbc702617c765a573961953cc0901.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ec307143b4bf45106369f256a796d61.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67ca5fd57c2c2fcc3c7a574fdd1467d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20849c00c47cbdc43f18d53341b6c4e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbdd54c04a50fa1c6d7a54a5775cc02e.png)
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2023-02-09更新
|
476次组卷
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5卷引用:河南省信阳高级中学2023届高三下学期2月测试数学(文)试题