2011·辽宁丹东·一模
1 . 设正有理数
是
的一个近似值,令
.
(Ⅰ)若
,求证:
;
(Ⅱ)求证:
比
更接近于
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e605b195c9b2fa6de4610688435468c2.png)
(Ⅰ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ed4b281843d131cc396a23c7b3f9526.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96412b85765842e5c8937deb921ba216.png)
(Ⅱ)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
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10-11高二下·福建·期末
解题方法
2 . 设
、
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/2b21208364124b5c477b2ff8df1c2e8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89dcc7b8826e90b8307307268ab49646.png)
您最近一年使用:0次
2016-11-30更新
|
779次组卷
|
9卷引用:2020届江苏省南通市高三下学期4月高考模拟数学试题
2020届江苏省南通市高三下学期4月高考模拟数学试题(已下线)2010-2011学年福建省师大附中高二下学期期末模块测试数学(理2016届江苏省淮安、宿迁、连云港、徐州苏北四市高三上期末数学试卷江苏省常熟市2018届高三上学期期中考试数学试题江苏省苏州市2018届高三上学期期中调研数学试题江苏省南师附中等四校2018届高三期初联考数学试题(已下线)专题2.3 基本不等式-重难点题型精讲-2021-2022学年高一数学举一反三系列(人教A版2019必修第一册)(已下线)专题3.3 基本不等式-重难点题型精讲-2021-2022学年高一数学举一反三系列(苏教版2019必修第一册)(已下线)专题1.14 基本不等式-重难点题型精讲-2021-2022学年高一数学举一反三系列(北师大版2019必修第一册)
2011·江西抚州·一模
3 . 不等式
的解集是________________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14f3c390f4d1d345237b01d00c770455.png)
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2011·吉林·一模
4 . 已知函数
(
为常数,且
);
(1)当
时,解不等式
;
(2)当
时,求函数
的值域.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9091af5a59cf6a9115673ec627622af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab989f85a681b41c29465d4be74b789f.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10ede78fd7ac619ea597856254bb5d75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
您最近一年使用:0次
2011·山西忻州·一模
名校
5 . (Ⅰ)解关于x的不等式
;
(Ⅱ)若关于
的不等式
有解,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb079f4083bce8996c4fe50683eb70b6.png)
(Ⅱ)若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/336a3bcf6d32663ca13da0d9b51e6520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2010·吉林·模拟预测
6 . 关于
的不等式
.(Ⅰ)当
时,解此不等式;
(Ⅱ)设函数
,当
为何值时,
恒成立?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98de3a6f6ecde4e01a1a280f8467d76d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf0086b054ef120408acac806a1b1318.png)
(Ⅱ)设函数
![](https://img.xkw.com/dksih/QBM/2012/3/6/1570789981249536/1570789987008512/STEM/a2a2e1470c4d40c68228a7686da8be97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://img.xkw.com/dksih/QBM/2012/3/6/1570789981249536/1570789987008512/STEM/3ec2cd9a40f444c49b249701da58c1cb.png)
您最近一年使用:0次
2010·上海长宁·二模
7 . 不等式
的解集是
![](https://img.xkw.com/dksih/QBM/2010/4/28/1569706388512768/1569706393387008/STEM/80212fcb79e64057a301771bf1541035.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2010·上海嘉定·二模
8 . 已知全集
,若集合
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c57a95fc2ee9482b137bb61e21713c4.png)
_________________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a64dc61989ca50b9ee19d835c4ed268.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89a3ad5849cdece91fc81c0de1d9d76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c57a95fc2ee9482b137bb61e21713c4.png)
您最近一年使用:0次
2010·黑龙江哈尔滨·一模
解题方法
9 . 选修4-5:不等式选讲
已知函数
.
(1)解不等式
;
(2)若
的定义域为
,求实数
的取值范围.
已知函数
![](https://img.xkw.com/dksih/QBM/2013/1/22/1571106167414784/1571106173222912/STEM/b290c47c791b4190bdca050fdb89853a.png?resizew=201)
(1)解不等式
![](https://img.xkw.com/dksih/QBM/2013/1/22/1571106167414784/1571106173222912/STEM/5f1b11dbe37c4cffafb623d7a396e80e.png?resizew=60)
(2)若
![](https://img.xkw.com/dksih/QBM/2013/1/22/1571106167414784/1571106173222912/STEM/bc7652e1a9234c8b9792ea3f4aac2e63.png?resizew=112)
![](https://img.xkw.com/dksih/QBM/2013/1/22/1571106167414784/1571106173222912/STEM/24ef52b311a64a8487b484642db6f64f.png?resizew=16)
![](https://img.xkw.com/dksih/QBM/2013/1/22/1571106167414784/1571106173222912/STEM/554e4897ee904263ad0d4c6dd31da47b.png?resizew=17)
您最近一年使用:0次
10 . 不等式
的解集是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d61d03180ade136aad0e6db13fd03de4.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次