1 . 选修4-5:不等式选讲
设函数
.
(1)证明:
;
(2)若当
时,关于实数
的不等式
恒成立,求实数
的取值范围.
设函数
![](https://img.xkw.com/dksih/QBM/2016/12/23/1619431100727296/1619431101448192/STEM/8c61335d77924149a474a3b4ba21ecd1.png)
(1)证明:
![](https://img.xkw.com/dksih/QBM/2016/12/23/1619431100727296/1619431101448192/STEM/0c3fb59105824cd4b59fee3299fc4964.png)
(2)若当
![](https://img.xkw.com/dksih/QBM/2016/12/23/1619431100727296/1619431101448192/STEM/e97d027c98c743c7b7593851f188fe66.png)
![](https://img.xkw.com/dksih/QBM/2016/12/23/1619431100727296/1619431101448192/STEM/7d68360177934e88915d572432f4edab.png)
![](https://img.xkw.com/dksih/QBM/2016/12/23/1619431100727296/1619431101448192/STEM/235c85375dab431fb7a7ade1aa1cd6bd.png)
![](https://img.xkw.com/dksih/QBM/2016/12/23/1619431100727296/1619431101448192/STEM/282862ac4a214d0bbf9ff21d57982f58.png)
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2 . 设函数
,不等式
的解集是
.
(1)求实数
的值;
(2)若
对一切
恒成立,求
的范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fda0d32c2d821c5f9d967f0c9470bc68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d24227741bf427e6bd73490baf3c3d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa85800cca03f7451f5cf2f9879cc0bc.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32bcb69e181661c9b1803a83004adcf7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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2017-02-08更新
|
427次组卷
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3卷引用:2015-2016学年重庆市巴蜀中学高二理下学期期末数学试卷
解题方法
3 . 已知函数
.
(1)若不等式
的解集为
,求
的值;
(2)若对
,
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd983584bf06297fe872915cb8e756d7.png)
(1)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51ea2fe6d047bc6d2c13ff4d397e8508.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/536b6b6e921813c02d85ec4c8805b745.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若对
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c780149aef1bd77162e85f7f8906a6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/410b47e5c2d5ed19d81941332fdf4e6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2017-02-08更新
|
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2卷引用:2017届湖南五市十校高三理12月联考数学试卷
名校
解题方法
4 . 已知函数
.
(1)当
时,求不等式
的解集;
(2)不等式
恒成立时,实数
的取值范围是
或
,求实数
的集合.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71d345fe799eff3cb1743b47fc74e954.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70fe5ced701ee5e489de2b0fd3260114.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8559250e7a91f36fe7a8ec6ce6a1550f.png)
(2)不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d65a9e03a39ff04c7560ad41e018b41f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d4c5e0e15ced24eebd33dbd26fad250.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a73704f4cedbef8adeb4bed78ee87b47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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2017-02-08更新
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2卷引用:2016届湖南省高三下高考考前演练五数学(理)试卷
5 . 选修4-5:不等式选讲
(1)设
均为正数,且
,证明:
;
(2)解关于
不等式:
.
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/751e274e9107d780c39ba9c49d6daefb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcef7ea60993d6b1139c96c3957af90f.png)
(2)解关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1a7513e1af7a97e343aa6f7d5bfe684.png)
您最近一年使用:0次
6 . 选修4-5:不等式选讲
设
,
,
均为实数.
(1)证明:
,
.
(2)若
.证明:
.
设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f435efcc7869eec21bdba1ed81dc3f5.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39cec33f40547394347efd0bd8e7b5f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dcded78233f41b856349aed5b35fd81.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42e4aa44191ac9891c27e451dd70fc61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20ee15ba6c5eff5c54c481f09693fbc2.png)
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2016-12-13更新
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4卷引用:2016届湖南长沙市高三下一模考试数学(理)试卷
名校
解题方法
7 . 设函数
.
(1)解关于
的不等式
;
(2)若实数
,
满足
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f97f84320e2fc890f7fd09ef1edd952d.png)
(1)解关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7245938325aa109c6afc9cb5c9b1f7f8.png)
(2)若实数
![](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/4a7dbc702617c765a573961953cc0901.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4ed6cc45ebffed2b097d564379ad43e.png)
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2016-12-13更新
|
940次组卷
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2卷引用:2017届重庆市第一中学高三上期中数学(理)试卷
8 . 已知函数
.
(1)当
时,解不等式
;
(2)若
的最小值为1,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d0244f3d915dcb752b1cf04dc0f80ed.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17a6be8fbe07bf31d7a2a353c51ce8af.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2016-12-13更新
|
245次组卷
|
2卷引用:2017届山西怀仁县一中高三上期中数学(文)试卷
9 . 选修4-5:不等式选讲
已知函数
.
(1)求不等式
的解集
;
(2)设
,证明:
.
已知函数
![](https://img.xkw.com/dksih/QBM/2016/11/18/1579005511172096/1579005511884800/STEM/0e0392e6f07d4090b382fa1459f95b8e.png)
(1)求不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa2a2dd94126c7f2e99b03e3ac30ba6c.png)
![](https://img.xkw.com/dksih/QBM/2016/11/18/1579005511172096/1579005511884800/STEM/cf395b79493142a69e359cb880a07ed4.png)
(2)设
![](https://img.xkw.com/dksih/QBM/2016/11/18/1579005511172096/1579005511884800/STEM/729894d06dc2446892f05262e9704e18.png)
![](https://img.xkw.com/dksih/QBM/2016/11/18/1579005511172096/1579005511884800/STEM/22af9dfb04f04ea2a81def48ca0cb159.png)
您最近一年使用:0次
名校
10 . 选修4-5:不等式选讲
设函数
.
(1) 证明:
;
(2)若不等式
的解集非空,求
的取值范围.
设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faaafb53e0e54f267e30abacd32f0c2c.png)
(1) 证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/beb222958408312ad0f88405e2bd107a.png)
(2)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b63767dd820c7b5a80b1c331188ca22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2016-12-13更新
|
1798次组卷
|
10卷引用:2016届河南省洛阳市一中高三下学期第二次模拟理科数学试卷
2016届河南省洛阳市一中高三下学期第二次模拟理科数学试卷2016届河南省洛阳市一中高三下学期第二次模拟文科数学试卷2017届河北省衡水中学高三下学期二调考试数学(理)试卷2017届河北省衡水中学高三下学期二调考试数学(理)试卷吉林省东北师范大学附属中学2017届高三下学期第三次模拟考试数学(文)试题2018年高考数学(理科,通用版)练酷专题二轮复习课时跟踪检测:(二十二) 不等式选讲【全国百强校】湖南省岳阳市第一中学2018届高三第一次模拟考试数学(理)试题【全国省级联考】黑龙江省2018年普通高等学校招生全国统一考试仿真模拟(一)数学(文)试题【全国省级联考】黑龙江省2018年普通高等学校招生全国统一考试仿真模拟(一)数学(理)试题2019届湖南省岳阳市第一中学高三第二次模拟数学(理)试题