2020高三·全国·专题练习
解题方法
1 . 已知
,函数
.
(1)当
,
时,求不等式
的解集;
(2)当
的最小值为
时,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0eb850dd10632da494a83a7ffbf97063.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b98edbb781162cebcbc12216ec4d7953.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a3c442579603164f3fc19458677d307.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b58bac2225b4fcb92bc0a38b2577732.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d91e07104b699c4012be2d26160976a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6371cac87744082adcf8e26317c3f12.png)
您最近一年使用:0次
解题方法
2 . 已知函数
.
(1)解不等式
;
(2)若正实数m,n满足
,试比较
与
的大小,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e4492464fc79e5360f2b9eec031eede.png)
(1)解不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/940adbf54e96ecb2bb2637e5f976a3b0.png)
(2)若正实数m,n满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9182d60213e94c38b2ce9eabf6f02546.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ca14e88ec467393b716bceadd83775c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d421cdc007251dd2f5c32f2a71b73845.png)
您最近一年使用:0次
名校
3 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de6a161ec01972c541cbd9e4127a24bb.png)
(1)当
时,求不等式
的解集;
(2)若
的解集包含
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de6a161ec01972c541cbd9e4127a24bb.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65397f11ea8af736f38debadf420c4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e5c1a7acdad9794447abfe58bd9f806.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57627145c511a9e9024263eb09c5405b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb87c830a03204a5b783ad4c2ba49c4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2020-07-23更新
|
269次组卷
|
8卷引用:2016届云南玉溪市高三第三次教学质检数学(理)试卷
名校
解题方法
4 . 设函数
,
.
(1)解不等式
;
(2)对于实数
,
,若
,
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9fa8b7b0872e1e4457326fc582d56ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff215adf1fcf4b7973af6a5fe7fe95d1.png)
(1)解不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f26dc0fd8e036375dc74e35124de730b.png)
(2)对于实数
![](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/e799e937076aa5a7dcd51cdc0f40f6b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c8fb9394417b3f97ea66e44f87975fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d164ee9905a3c39ca67709de0fa5eed.png)
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2020-07-14更新
|
207次组卷
|
4卷引用:河南省2020届高三6月大联考数学理科试题
名校
解题方法
5 . 已知
,函数
.
(1)若
,
,求不等式
的解集;
(2)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66eba129d92ede31b728e2590c4db2a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4207ad5ec1a1cdaad6393a9f89be3015.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/711b21672fd907c5c92fee1d649e7003.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c87b351f16728b0023fd63678f8103c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6009d51b897a4f898b57e483234f391a.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/868fee1ad1c5dd1f1a72c284744da2d5.png)
您最近一年使用:0次
2020-07-04更新
|
134次组卷
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2卷引用:江西省稳派教育2020届高三年级调研考试卷(四)数学(理科)试题
名校
解题方法
6 . 已知函数
.
(1)若关于
的不等式
有解,求实数
的取值范围;
(2)若不等式
对任意
成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b30f3938c438ab74413f2cefec12f01b.png)
(1)若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5efbe27501ebed775a665de0ee88a7d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f09114512f1cec153a0920192d144f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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2020-06-30更新
|
211次组卷
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2卷引用:黑龙江省哈尔滨市第六中学校2020届高三第三次模拟考试数学(理)试题
解题方法
7 . 已知函数
.
(1)当
时,解不等式
;
(2)对任意
,若不等式
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15b1c910555c36a690ed8867adbe0bd5.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/200f24e682c93e02a87f3f9d57dc5d40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30ac08bac21c79355400ff5edd3c9c7d.png)
(2)对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60d200a7afe1e011713e14886a6887e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ea9655f1d25bb28f5433759c1aa2786.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2020-06-29更新
|
204次组卷
|
5卷引用:福建省2020届高三毕业班质量检查测试(B卷)数学(文)试题
福建省2020届高三毕业班质量检查测试(B卷)数学(文)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)福建省2020届高三(6月份)高考数学(文科)模拟试题(b卷)福建省2020届高三(6月份)高考数学(理科)模拟试题(b卷)福建省2020届高三毕业班质量检查测试(B卷)数学(理)试题
解题方法
8 . 已知集合
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1cc4598cabb186a74f800972ad4f31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/733073f642287cf7d8f2823ef46c061c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4b9b470218359a4a47be9244980489e.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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2020-06-13更新
|
591次组卷
|
4卷引用:2020届天津市河东区高考模拟数学试题
2020届天津市河东区高考模拟数学试题考点01 集合与常用逻辑用语-2020年【衔接教材·暑假作业】新高三一轮复习数学(理)(人教版)考点01 集合与常用逻辑用语-2020年【衔接教材·暑假作业】新高三一轮复习数学(文)(人教版)(已下线)专题2.1 不等式的性质及常见不等式解法(练)-2021年新高考数学一轮复习讲练测
解题方法
9 . 关于
的不等式
,对于
恒成立,则实数
的取值范围是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/971d26cc4e279aceaa5333c42521c224.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ce485410257c9c1fae9d87ce3e44cc8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
您最近一年使用:0次
10 . 已知函数
,
的解集为
.
(1)求M;
(2)若正实数a,b,c满足
,求证
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/067a194da5f227dd54ef37943a14e9fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9f2f7604842ca5159a1f34c1c742447.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04817dcd609822936a036e9b9a8c3f34.png)
(1)求M;
(2)若正实数a,b,c满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/989680e6b74504b71f5ece8771c5301d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c05475f85571c5a43ff1df285611dfc.png)
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2020-05-28更新
|
513次组卷
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4卷引用:2020届湖北省八校(黄冈中学、华师一附中、襄阳四中、襄阳五中、荆州中学等)高三下学期第二次联考数学(理)试题