解题方法
1 . 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
解题方法
2 . 已知
.
(1)求不等式
的解集;
(2)若
的最小值是
,且
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19a647fbf9b1bd6eb69050f197f8be46.png)
(1)求不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e5e587ca42942c63cf7ba196a355a81.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb4c15d51c31cd154a6b420fa137ba53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d262baeda0d6800fb87f25f891ce802.png)
您最近一年使用:0次
2020-07-14更新
|
89次组卷
|
2卷引用:河南省2020届高三年级猜题大联考(三)数学(理)试题
3 . 已知函数
.
(Ⅰ)若不等式
对一切实数x恒成立,求实数a的取值集合A;
(Ⅱ)若
,求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a717dd2f1a8f24b4e907514ae5a4cd.png)
(Ⅰ)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc860b0a89e72c8e1c7f19dd05af8a64.png)
(Ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e13a814f8e081078dcf3788177affcd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05ed3a966187e3c623b3fe6b901cd207.png)
您最近一年使用:0次
2020-07-11更新
|
280次组卷
|
5卷引用:黑龙江省哈尔滨师范大学附属中学2020届高三下学期第三次模拟数学(理)试题
名校
解题方法
4 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70af7ea1e43238f46e537032b7234494.png)
(1)求函数
的最小值m;
(2)在(1)的条件下,正数a,b满足
,证明
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70af7ea1e43238f46e537032b7234494.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)在(1)的条件下,正数a,b满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6964f26e70afe3d425ea971d3212bb9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71b0e403c5f00d0357d3fa30d6c2717c.png)
您最近一年使用:0次
2020-04-09更新
|
506次组卷
|
6卷引用:山西省2019-2020学年高三下学期3月适应性调研数学(文)试题
名校
解题方法
5 . 已知函数
.
(1)若函数
的最小值为3,求实数
的值;
(2)在(1)的条件下,若正数
满足
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/105fbf91ce505b1ce714c57a38c80233.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)在(1)的条件下,若正数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48de42fc90f6c80a503d8bea9d4412ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5adf5bfbc5d41a5795e7d2d65d86b603.png)
您最近一年使用:0次
2020-03-23更新
|
184次组卷
|
2卷引用:2019届吉林省东北师范大学附属中学高三年级下学期理科数学大练习(五)
解题方法
6 . 已知实数
,
满足
.
(Ⅰ)求证:
;(其中
)
(Ⅱ)当
,
时,求
的最小值.
![](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/d66a894fe1c8dddb41d9e4885e979a5c.png)
(Ⅰ)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af8f7ee203960a807c28fa1b63f21a3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cec12441802f71e803efaf2c62ee588.png)
(Ⅱ)当
![](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/62114909ecda1a573ec63c1c35612435.png)
您最近一年使用:0次
解题方法
7 . 已知函数
.
(1)若
,求实数
的取值范围;
(2)若
求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47e4655a983ea82a4d09cf3b6fa11285.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36d39979cf1e03044bfc63703bb10505.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e38ce59777d7392e40d8f07c5b86285.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f61db73a5a9bce4ece8259a4c7d29376.png)
您最近一年使用:0次
2020-03-21更新
|
114次组卷
|
2卷引用:山西省芮城县2020届高三下学期3月月考数学(理)试题
2020高三·全国·专题练习
名校
8 . 已知函数
.
(1)解不等式![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac35bd559ca747109ab682da7248dc30.png)
(2)若
,求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64a05df8edae997c5ab235e54755ed33.png)
(1)解不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac35bd559ca747109ab682da7248dc30.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e10e1c43b86a8cd4360ca9b57232164.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95826a4a8086718b84e020387a53973c.png)
您最近一年使用:0次
2020高三·全国·专题练习
解题方法
9 . 已知函数
.
(1)解不等式:
;
(2)已知
,求证:
恒成立.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64a05df8edae997c5ab235e54755ed33.png)
(1)解不等式:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18176c64429353a8f849298d58d5fd8f.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6455e38ff53ede2508e4d9cb23f0b86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/376cca4f03a02bcf822db2016ba59eb0.png)
您最近一年使用:0次
名校
10 . 已知函数
.
(1)求函数
的最小值M;
(2)若
,
,且
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16cf45af83b81ef5764e8beb7e5901f7.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](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/034a0f4d3755f5f4934e5f11b1296c6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/519f884b5ec1e2ffc37090bcf9894895.png)
您最近一年使用:0次
2020-10-11更新
|
685次组卷
|
9卷引用:云南师大附中2021届高三适应性月考(二)文科数学试题