解题方法
1 . 已知
都是正数,且
,证明:
(1)证明:
;
(2)若
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/751e274e9107d780c39ba9c49d6daefb.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6691bb95c2902c1e077c64337948ee9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b83fac7c530f31d7079f052c200c56cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24f901efd69a16462c2f62a11bf6c12c.png)
您最近一年使用:0次
2 . 已知函数
.
(1)求
的值域;
(2)若
的最大值为
,正实数a,b,c满足
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e4492464fc79e5360f2b9eec031eede.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80575fb0238c04a73edf1c4e24375206.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e3a93bba5d6d8b4279744c9a330b461.png)
您最近一年使用:0次
名校
解题方法
3 . 已知函数
.
(1)求
的最小值
;
(2)若
为正实数,且
,证明不等式
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eeac9c68cb0927860b9501715aee4161.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4437f0a5f10a9ff9fe6b7d6d353f67c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdedd395cdf9ce33624a1dd9439d41ea.png)
您最近一年使用:0次
2023-05-03更新
|
669次组卷
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6卷引用:江西省重点中学盟校2023届高三第二次联考数学(文)试题
解题方法
4 . 设
,已知函数
的最小值为2.
(1)求证:
;
(2)
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2684b72f9f38f5046c8ecd4280b7b14b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b1f328fcd670bfd11fa568abdf7f6c4.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb0d5bfaa7081b3b1c81757f7846aa12.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ea7936ad4048b3fc87a81d5469ec33e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e2f9e3626172458e0d541aefb6bc9b1.png)
您最近一年使用:0次
2023-04-10更新
|
419次组卷
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3卷引用:贵州省普通高等学校招生2023届高三适应性测试数学(理)试题
名校
5 . 已知a,b,c是正实数,且
.求证:
(1)
;
(2)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a57e060f61f7efa54982bda67db483a.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3b80c7d2b51c2317f39d5c9dfd64fe5.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a3d802a2fca822cb3e9409a8d0a2fea.png)
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2023-04-07更新
|
600次组卷
|
4卷引用:河南省部分学校2023届高三高考仿真适应性测试文科数学试题
解题方法
6 . 已知三个正实数
满足
.
(1)证明:
;
(2)当
时,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46704e2e11746e32e497cd2627d9166b.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc30e5da24cd6b21d6ca09818535890b.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4580cc037c0c760c728cdbb74a8154c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5b4d201579954e11e2a16fa990552bf.png)
您最近一年使用:0次
解题方法
7 . 已知正数a,b,c满足
.
(1)若
,证明:
.
(2)若
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc2da16afc669d70a696809a07b3a5f9.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a57e060f61f7efa54982bda67db483a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0e33141676a1e58c8757b7ec045aa69.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f22fec5a381ae8aca93d876e54c79de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851f033674f3455c66c76bae1fe425ea.png)
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2023-03-26更新
|
320次组卷
|
6卷引用:广西2023届高三模拟考试数学(理)试题
广西2023届高三模拟考试数学(理)试题广西壮族自治区玉林市2023届高三二模数学(文)试题广西壮族自治区玉林市2023届高三二模数学(理)试题西藏昌都市第一高级中学2023届高三高考全真仿真考试数学(理)试题(已下线)专题21不等式选讲(已下线)专题21不等式选讲
名校
解题方法
8 . 已知![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbc3cfb50ae98416292d40e2b6df5787.png)
.
(1)若
,解不等式
;
(2)当
时,
的最小值为3,若正数m,n满足
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbc3cfb50ae98416292d40e2b6df5787.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e5ff2705eb737adef9a6dc70559d79.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c33d27a28b7902302b43fdc32fda3b44.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0205da32e7e6260b5ea532848e82d70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/404a00bf430f0f1a0fadc3130b79cb23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7665f6fc755673a94df20bb66c694013.png)
您最近一年使用:0次
2023-03-22更新
|
572次组卷
|
4卷引用:河南省2022-2023学年高三下学期核心模拟卷(中)文科数学(一)试题
9 . 已知函数
.
(1)若
的最小值为
,求
的值;
(2)在(1)的条件下,
,
,
为正实数,且
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33e602451bf6c72f7d7d06be1716e1ef.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(2)在(1)的条件下,
![](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)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0365d395854fff50b7e219ed5b3bb7ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45c74874e5b14cc70edf698d02a23810.png)
您最近一年使用:0次
2023-03-09更新
|
437次组卷
|
6卷引用:河南省开封高级中学2022-2023学年高三下学期核心模拟卷(中)理科数学(二)试题
10 . 已知
均为正数,且满足
.证明:
(1)
;
(2)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71dd40d3df2762d6e6bdefcb5f397269.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27ca7392c420e6e88a399678fcd6ba4d.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b3625cc40244dd927192967d124f3fa.png)
您最近一年使用:0次
2022-09-14更新
|
572次组卷
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5卷引用:广西2023届高三上学期西部联考数学(理)试题