名校
解题方法
1 . (1)已知定义在
上的函数
的最小值为
,求
的值;
(2)若
为实数,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98d916b7145fb85cdfe34832a799316d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a59101326c029393a18f8285893fcbb4.png)
您最近一年使用:0次
2020高三·全国·专题练习
解题方法
2 . 已知
,函数
.
(1)当
,
时,求不等式
的解集;
(2)当
的最小值为
时,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0eb850dd10632da494a83a7ffbf97063.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b98edbb781162cebcbc12216ec4d7953.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a3c442579603164f3fc19458677d307.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b58bac2225b4fcb92bc0a38b2577732.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d91e07104b699c4012be2d26160976a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6371cac87744082adcf8e26317c3f12.png)
您最近一年使用:0次
解题方法
3 . 已知函数
.
(1)求不等式
的解集;
(2)已知函数
的最小值为
,且
,
,
都是正数,
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6e08ec174069357996bbc019e157997.png)
(1)求不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94eeafdf45063fe563d7c71a4cb5bff3.png)
(2)已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e363788f18621baf47bce59e106a206.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](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/48de42fc90f6c80a503d8bea9d4412ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62be280a88124f783dd3fa6de2736914.png)
您最近一年使用:0次
4 . 已知函数
.
(1)若
,解不等式
;
(2)若对任意
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18ee503d16d8fc74aa1852a808b1e615.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6096dcd8029361d0734ce9382291d02b.png)
(2)若对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8129f89bb726eabd2af772d3e9f0f48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f2de6eba2206c57a9b8c1cc7d35558.png)
您最近一年使用:0次
2020-05-04更新
|
158次组卷
|
2卷引用:2020届广东省湛江市普通高考测试(一)数学(文)试题
5 . 已知函数
.
(Ⅰ)当
时,解不等式
;
(Ⅱ)若
的值域为
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47bfdff4d543b742e29465ef177315e0.png)
(Ⅰ)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48adb8a59b5c02fad5eada1b35171cf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00983cd16d3d6bfb62f922a20e4ae6e1.png)
(Ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d27e0400d730672ae2110ff48786dd1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd4d041ba479ad311a16782eee020d99.png)
您最近一年使用:0次
2020-05-26更新
|
424次组卷
|
5卷引用:2020届四川省攀枝花市高三第三次统一考试数学(理)试题
名校
解题方法
6 . 对
,
的最小值为
.
(1)若三个正数
、
、
满足
,证明:
;
(2)若三个实数
、
、
满足
,且
恒成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02cdab65718a2348c2339da2ed817edd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f9637edbb8e2271d3bf2953b8175895.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(1)若三个正数
![](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/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79d3a190a378e8a73322fabb1afa9f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72f358f151a05c7ca3eafa9d930f040c.png)
(2)若三个实数
![](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/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79d3a190a378e8a73322fabb1afa9f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7fe88326ec46ab4fa284a5965e009b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
2020-05-25更新
|
379次组卷
|
4卷引用:2020届陕西省榆林市高三第三次模拟数学(文)试题
2020届陕西省榆林市高三第三次模拟数学(文)试题上海市实验学校2020-2021学年高一上学期期中数学试题2020届陕西省榆林市高三第三次模拟数学(理)试题(已下线)专题10-2 不等式选讲题型归类(讲+练)-1
名校
7 . (1)设
,
,
是不全相等的正数,证明:
.
(2)已知函数
.当函数
的定义域为R时,求实数a的取值范围.
![](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/35f0514c4015765d1b12b76f4df81215.png)
(2)已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47a6161583b2653a2922c1081206b378.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
您最近一年使用:0次
名校
解题方法
8 . 设函数
.
(1)若
的解集为
,求实数
,
的值;
(2)当
,
时,若存在
,使得
成立的
的最大值为
,且实数
,
满足
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6228f46a87a5a980ba45d304e90fe7e0.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abdaffa9c15517afe6d7ba6488f88f67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dccf1f9faac56117d6d3dd1dddd286d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03837b3769eda7f0d3804cc5ad4a6d60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f07ad90ca228230b03f12eb48ee0c1d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/128596b1fa47e37f7ddd307caf1f2be3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37462b3ca360fb3aa151dbff9a57c91b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45919ba8b183e7d6f5fa017a24512b2b.png)
您最近一年使用:0次
2020-07-22更新
|
552次组卷
|
3卷引用:吉林省梅河口市第五中学2020届高三第七次模拟考试数学(文)试题
吉林省梅河口市第五中学2020届高三第七次模拟考试数学(文)试题吉林省通化市梅河口五中2020届高三高考数学(文科)七模试题(已下线)专题28 证明不等式的常见技巧-学会解题之高三数学万能解题模板【2022版】
解题方法
9 . 已知函数
的最大值为2.
(1)求实数m的值;
(2)若a,b,c均为正数,且
.求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf96902764b635b1979bd420074e92a0.png)
(1)求实数m的值;
(2)若a,b,c均为正数,且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3539640e5344567a1071b64751cecc8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8720d2743b33079a807740dc0d761ad.png)
您最近一年使用:0次
名校
10 . 已知不等式
的解集为
.
(1)求实数
、
的值;
(2)设
,
,且满足
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be38864859a13baea0fd844f5b607cb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/468298cfa68580ac84e21a7f064ba152.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b140e221ddf537b8964fff8557cca0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de8610232c77741a37463feba1a66c94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c776e3e92078a273e5ee01869717db7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a88c1735762564371ded35664a2d83d.png)
您最近一年使用:0次
2020-04-24更新
|
137次组卷
|
3卷引用:2020届全国100所名校最新高考模拟示范卷高三理科数学(四)试题