名校
解题方法
1 . 已知
为任意实数.
(1)求证:
;
(2)求函数
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc7e46f4059644482697283856aed509.png)
(2)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e20cb7aee71c05ce455b61ad7e88738.png)
您最近一年使用:0次
2017-06-05更新
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1000次组卷
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3卷引用:河北省衡水中学2017届高三高考押题卷三卷理数试题
名校
2 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9cf5ada64ed11342fe437c9cc460b37e.png)
(1)求不等式
的解集
;
(2)若
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9cf5ada64ed11342fe437c9cc460b37e.png)
(1)求不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02bdb9352c3d83757dcf46cc84cd1d47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17f9849615359e0d43a363c88c537e6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce7e047f411d87891656ea1f1649e134.png)
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2017-06-04更新
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320次组卷
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7卷引用:山西省孝义市2017届高三下学期高考考前质量检测三(5月模拟)数学(文)试题
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3 . 已知函数
的顶点为
.
(1)解不等式
;
(2)若实数
满足
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/592744129d3499498fee320ae874645e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5030685d4bfdaba51d78d4678f3e101c.png)
(1)解不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25112144d27090b92127eeb28c5fc112.png)
(2)若实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f28a29cc6a8a0b4139e164358f965901.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d29de753b8560abde5f45a1eb327fd80.png)
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2017-04-27更新
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4卷引用:贵州省贵阳市第一中学、凯里市第一中学2017届高三下学期高考适应性月考卷(七)数学(理)试题
名校
解题方法
4 . (1)证明:如果
,
,那么
;
(2)已知
,求
的最小值.
![](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/ead56bb8f5e7a72e9f8640e795caf68d.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a542638b19cf9641ee36f5c901c05f91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f352f97803f55b21c0dd569caa4956f9.png)
您最近一年使用:0次
名校
5 . 已知函数
.
(1)求
的值域;
(2)若
的最大值时
,已知
均为正实数,且
,
求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f68473853340be39cb4eeb7301ec465a.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbc7f1875db3c982d397a56150dc3cca.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbc7f1875db3c982d397a56150dc3cca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a14c388e1e2e5a2ff1ccf6caffbee0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d428332f8c32547403195c443d163dc6.png)
求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa4af009ae03e25ce688eaa67c21339a.png)
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2017-05-16更新
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679次组卷
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3卷引用:云南省曲靖市第一中学2016-2017学年高二下学期期中考试数学(文)试题
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6 . 选修4-5:不等式选讲
已知函数
,
.
(1)当
时,解不等式
;
(2)若对任意实数
,
的最大值恒为
,求证:对任意正数
,当
时,
.
已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b32e7a9ea48717373178e33df939854a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a2a51944c720568f35d443589dfc1aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e799e937076aa5a7dcd51cdc0f40f6b0.png)
(2)若对任意实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d86be2de99fbf7f99cd54ab399146b00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26d095c073ae38f2ad8a035f78660069.png)
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2017-06-03更新
|
649次组卷
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5卷引用:河北省保定市2016-2017学年高二下学期期末考试数学(理)试题
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7 . 已知函数
的最小值为
.
(1)求
的值以及此时的
的取值范围;
(2)若实数
满足:
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b808bd942d6c634b83bb1bfab7e0acd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)若实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14c5fe8a9ad42e52a8a40242865c6752.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adf44f8870ab84f522a8b9de8baec6f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1d4b51f93b86fc5a3c97623d1e97088.png)
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2017-05-03更新
|
751次组卷
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7卷引用:广东省东莞市2017届高三第二次模拟测试数学理试题
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8 . 设函数
,
.
(1)当
时,解不等式:
;
(2)若关于
的不等式
的解集为
,且两正数
和
满足
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fda0d32c2d821c5f9d967f0c9470bc68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b5857095beeca5c7e3111a4df36428f.png)
(2)若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74dbd58b21a94cf93f4623c07452b102.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb347db7ecbcee565d6055df284d4a55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5873c01192b7d33b7483f444f90b5b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4a7ca80cf04b6b4a92d863f97d1a9c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5c6e884a332a3e34deafaf987506cf7.png)
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解题方法
9 . 已知不等式
的解集为
.
(1)求
的值;
(2)若
求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78d76479bcf76e3716b3f2de9e8e7ca0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7be064096dc71f31d7eb7a1aae1d1d20.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e3d325f31006e62d95d8290aeea4731.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/120b6fbae6d3879fa059e02e505ab8a7.png)
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解题方法
10 . 已知函数
(
).
(1)证明:
;
(2)若
为
的最小值,且
(
,
),求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c5fc781521174d3d938bdc0f9874685.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b140e221ddf537b8964fff8557cca0.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f61db73a5a9bce4ece8259a4c7d29376.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48325f732c8ba723f3b5dc30e1eb9c08.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/ce460941cf3ff54ccb6aec5085689a91.png)
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2017-04-28更新
|
580次组卷
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3卷引用:2017届陕西省咸阳市高三模拟考试(三)数学(文)试卷