解题方法
1 . 已知a,b,c为正实数,且
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a7230fe9f2a64eada856831363ad3cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a6925b73fefa089736e2ebddfc1800e.png)
您最近一年使用:0次
解题方法
2 . 已知
,
,且
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fde64f4d3c38e43fbdee24eadc4b0dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eec336faee8689281a6f6b465e7fcff9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbe0890043f34b4575bf7bb3a773e32b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b843a0387f0aa2a88ad5d8099e6637a7.png)
您最近一年使用:0次
2020-06-04更新
|
187次组卷
|
2卷引用:2020届江苏省七市(南通、泰州、扬州、徐州、淮安、连云港、宿迁)高三下学期第三次调研考试数学试题
解题方法
3 . 已知
,
,
均为正数,且
,求证:
.
![](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/4d4de9a62858fac76129590f88a537e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23a9d805fb50d64ab2a3767dbdaa4a12.png)
您最近一年使用:0次
2020-05-29更新
|
332次组卷
|
5卷引用:2020届江苏省苏州市吴江区高三下学期五月统考数学试题
2020届江苏省苏州市吴江区高三下学期五月统考数学试题江苏省2020届高三下学期高考压轴卷数学试题【区级联考】江苏省南通市三县(通州区、海门市、启东市)2019届高三第一学期期末联考数学试题江苏省苏州市2019-2020学年高三下学期3月调研数学试题(已下线)专题23 不等式选讲-2020年高考数学(理)母题题源解密(全国Ⅱ专版)
解题方法
4 . 已知x、y、z均为正数,且
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba9b4a957b3185b07a6840c1ab6bb431.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdbc3756ab2bb0ed3b22ddb5bef9d50f.png)
您最近一年使用:0次
5 . 已知实数
、
、
满足
,
,
,
,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)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67ca5fd57c2c2fcc3c7a574fdd1467d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cec12441802f71e803efaf2c62ee588.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea63bc7cb16bb72fd3fe1a58bec5143b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8720d2743b33079a807740dc0d761ad.png)
您最近一年使用:0次
2020-05-09更新
|
281次组卷
|
3卷引用:2020届江苏省泰州市高三下学期调研测试数学试题
6 . 已知不等式
的解集为
,求实数
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aba8ed674806219065403c67a1dde72d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0e2bd2cf8c6d33577926bf2f8b2f82a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
您最近一年使用:0次
解题方法
7 . 已知凸
边形
的面积为1,边长
,
,其内部一点
到边
的距离分别为
.求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/613e0062111a4337e4f38d0763fac544.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33a1f075c0442a54c3894d137d94fb0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6986c1672900b57762a2f1cb31c8a032.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33a1f075c0442a54c3894d137d94fb0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d880044f15867e997da6a8ef06afe3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba6ed030d87030a6d1226f9e3d86eed9.png)
您最近一年使用:0次
2020·江苏·一模
解题方法
8 . 已知函数
,
.
(1)当
时,求不等式
的解集;
(2)若
对
恒成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37b7b1398b1fc722b390d311f37ae275.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc2ae3d3787d2bf66b5aea4e08aa8121.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4acda6b6464db27e1ec18a1522406d2.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daa18838a13fda4e45612c32cdf98b71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
名校
9 . 已知实数
满足
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16fafde379cf65effcdb9125f1845757.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fca4944e5bef09467cd9af1b7037876.png)
您最近一年使用:0次
2019-05-05更新
|
483次组卷
|
7卷引用:2020届江苏省南通市海安高级中学高三下学期期初模拟考试数学试题
10 . 已知函数
.
(1)解不等式
;
(2)若
,且
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbea50b9ee9088ba9c3b474a893fc52b.png)
(1)解不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/443d16ea6d479a3ed5b37e57931a7bf3.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43a6f36741b86f464be362b12bac13d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20849c00c47cbdc43f18d53341b6c4e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea94f45eb564de3c17de05b6747c079b.png)
您最近一年使用:0次