名校
1 .
设
,记
的解集为
.
(1)求集合
;
(2)已知
,比较
与
的大小.
设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13c7b398a239d0e80f968c3c130b4488.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/857e07c5fb7f2410d6d267a00889db10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(1)求集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/582ad43edf388c096e7704d92340bf75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f814b4dc5876d8bf3aa145593bf4cc66.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2c70fcaa661df4fbcad820b439accda.png)
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2018-01-08更新
|
414次组卷
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5卷引用:湖南省长沙市2018届高三第一次模拟数学(理科)试题
名校
2 . (1)已知函数
.若函数
的图象恒在
轴上方,求实数
的取值范围.
(2)已知
,
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87d7bd9af45c26a63181082b67a775df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9a6ce91e8586b6852eeb67ccc1a9689.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2958030ec9d7543dda1f529593a915e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/010d2b5baa26f1a48176be2b33416f28.png)
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10-11高三上·河南周口·期中
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3 . 已知函数
.
(1)求
的值域;
(2)设
若对于任意
,任意
,恒有
成立,试求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c1b679387c75092991acd6edd228c75.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d479a86a1711709b2d100fe4daf3e7cf.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/484bc23b18333339c0ed95529a06519f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad3e2d2f1e964ee569eb59eacb36cd62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39106d1bdd098fc71c68b9c606891eeb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8be2fee2177d01a5a98ee3fd473d8da8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2017-08-02更新
|
265次组卷
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15卷引用:2019届湖南省长沙一中、师大附中、雅礼中学、长郡中学高三下学期5月联考数学(文)试题
2019届湖南省长沙一中、师大附中、雅礼中学、长郡中学高三下学期5月联考数学(文)试题2019届湖南省长沙市雅礼中学高三下学期一模数学(文)试题(已下线)2011届河南省周口市高三上学期期中考试理科数学卷(已下线)2010-2011年湖北省襄阳四校高二第二学期期中考试文数(已下线)辽宁省沈阳二中10-11学年高二下学期期末考试数学(理)(已下线)2010-2011年辽宁省高二下学期期末考试数学理科(已下线)2011-2012学年江西省临川一中高二下学期期中考试理科数学试卷(已下线)2013届辽宁省沈阳二中高三10月月考文科数学试卷2016届辽宁省鞍山市一中高三第四次模拟文科数学试卷2016届辽宁省鞍山市一中高三第四次模拟理科数学试卷2016届辽宁省抚顺一中高三四模理科数学试卷2016届辽宁省抚顺一中高三四模文科数学试卷2016届辽宁沈阳东北育才学校高三八模考试数学(理)试卷山东省武城县第二中学2016-2017学年高二6月月考理科数学试题【全国百强校】辽宁省沈阳市东北育才学校2019届高三联合考试数学(文)试题
4 . 若
,则下列不等式:①
; ②
;③
;④
中,正确的不等式有
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6711e06cd61ac21656512e33f4ee2cd6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6a46e678bf9d2df5ad4c782b3dc22f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25d60a700a5a306f650c0bb85c07d0fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b32e1a1c8cb8f9fdab1d90cb9507c97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc03d6198a94cfdf5ba108fd4ae668e2.png)
A.①② | B..①④ | C.②③ | D.③④ |
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名校
解题方法
5 . 已知函数
.
(Ⅰ)解不等式
;
(Ⅱ)求函数
的图象与
轴围成的三角形面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89f4240c3512559097dfd2c1ecabbdbf.png)
(Ⅰ)解不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14ada22bfcdbb9555fb916ddb881367e.png)
(Ⅱ)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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2017-06-13更新
|
366次组卷
|
2卷引用:湖南省长沙市长郡中学2017届高三下学期临考冲刺训练理科数学试题
名校
6 . 已知函数
.
(1)若
时,解不等式:
;
(2)对任意实数x,不等式
恒成立,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5154c4aa5ddb6f5951560897c7d93674.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb66d3855d4aea9386f0b2d278355b54.png)
(2)对任意实数x,不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4054fed106a87c9d0ab85fa7209c1f3c.png)
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2017-05-17更新
|
369次组卷
|
3卷引用:【全国百强校】湖南省长沙市雅礼中学2019届高三上学期11月份月考数学(理)试题
7 . 选修4-5:不等式选讲
已知
.
(Ⅰ)当
时,求
的最小值;
(Ⅱ)若不等式
的解集非空,求
的取值范围.
已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c369ae4200a04f30677f41d7d28faf1a.png)
(Ⅰ)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
(Ⅱ)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c7929619f0129204c0c633918818f12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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名校
8 . 选修4-5:不等式选讲
已知
(
是常数,
).
(Ⅰ)当
时,求不等式
的解集;
(Ⅱ)如果函数
恰有两点不同的零点,求
的取值范围 .
已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81f3802aa76c523d29540e9b1342255c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
(Ⅰ)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22e38c541dec8fce1d26886e5ef7d21f.png)
(Ⅱ)如果函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2017-02-16更新
|
467次组卷
|
2卷引用:2017届湖南长沙一中高三理月考五数学试卷
9 . 选修4-5:不等式选讲
已知
,且
.
(1)求证:.解关于
的不等式
;
(2)若
,使得对一切实数
不等式
恒成立,求实数
的取值范围.
已知
![](https://img.xkw.com/dksih/QBM/2017/2/8/1625057959280640/1625057959960576/STEM/eea1e7fef63549b59a19977b2feffd5d.png)
![](https://img.xkw.com/dksih/QBM/2017/2/8/1625057959280640/1625057959960576/STEM/7cf306cd9f4e4017a57169e5b23f1f67.png)
(1)求证:.解关于
![](https://img.xkw.com/dksih/QBM/2017/2/8/1625057959280640/1625057959960576/STEM/0d41b1dd32df4e80a4e3b8555bfbd559.png)
![](https://img.xkw.com/dksih/QBM/2017/2/8/1625057959280640/1625057959960576/STEM/715f565f92944eb0aea264e46916e2cb.png)
(2)若
![](https://img.xkw.com/dksih/QBM/2017/2/8/1625057959280640/1625057959960576/STEM/243bdc69eaaa414eaaf36a5d3ace1248.png)
![](https://img.xkw.com/dksih/QBM/2017/2/8/1625057959280640/1625057959960576/STEM/85b4269e20c248448a37b79ddebf853c.png)
![](https://img.xkw.com/dksih/QBM/2017/2/8/1625057959280640/1625057959960576/STEM/cb3237793b5049fca9af882d68c29a64.png)
![](https://img.xkw.com/dksih/QBM/2017/2/8/1625057959280640/1625057959960576/STEM/f05aae5310ee445c9af6a1e18d94fd7e.png)
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10 . 选修4-5:不等式选讲
已知函数
.
(1)若
,求不等式
的解集;
(2)若
的解集包含
,求实数
的取值范围.
已知函数
![](https://img.xkw.com/dksih/QBM/2017/2/8/1625057736572928/1625057737228288/STEM/61700a437820428796cc2f3ced12589e.png)
(1)若
![](https://img.xkw.com/dksih/QBM/2017/2/8/1625057736572928/1625057737228288/STEM/ac49a3b47ceb4e9d92934890b73b3fc1.png)
![](https://img.xkw.com/dksih/QBM/2017/2/8/1625057736572928/1625057737228288/STEM/e1e8ff729556481b956d3b7e6049bb1f.png)
(2)若
![](https://img.xkw.com/dksih/QBM/2017/2/8/1625057736572928/1625057737228288/STEM/a7fedbc065354ee6b235b9af75ae5c03.png)
![](https://img.xkw.com/dksih/QBM/2017/2/8/1625057736572928/1625057737228288/STEM/5bfa483c2fe8488c87c39f9161acd895.png)
![](https://img.xkw.com/dksih/QBM/2017/2/8/1625057736572928/1625057737228288/STEM/0ce811512a7e401e84439ebb2b73fdc1.png)
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