名校
1 . 已知函数
.
(1)解不等式
;
(2)若
,且
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbea50b9ee9088ba9c3b474a893fc52b.png)
(1)解不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/443d16ea6d479a3ed5b37e57931a7bf3.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43a6f36741b86f464be362b12bac13d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20849c00c47cbdc43f18d53341b6c4e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea94f45eb564de3c17de05b6747c079b.png)
您最近一年使用:0次
2020-02-27更新
|
37次组卷
|
2卷引用:【全国百强校】河南省南阳市第一中学2018届高三第十九次考试数学(理)试题
名校
2 . 已知
是满足下述条件的所有函数
组成的集合:对于函数
定义域内的任意两个自变量
、
,均有
成立.
(1)已知定义域为
的函数
,求实数
、
的取值范围;
(2)设定义域为
的函数
,且
,求正实数
的取值范围;
(3)已知函数
的定义域为
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1530a52e32f2e270848d323f7bac6472.png)
(1)已知定义域为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bce5edf6bcdccdf622b561ea9e65464.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(2)设定义域为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/417ab20883d799aaf311371393fa7d7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60f280abf09794bf731fe576e40c6547.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a81563bc0c39e31f0f0edc340a2d6df0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/053a7b7330927b67c9088c20aa620f7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/830b146d99a69cf658c411049d2abda0.png)
您最近一年使用:0次
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解题方法
3 . 已知
.
(1)求
;
(2)已知
、
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a47fbf219806f2c9053d893521016c27.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dab92728b35ed5798e07a2b0095bfcc1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dab86d57f9d116c72286e770aa29bbd.png)
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4 . 已知函数
,且
的最大值为3.
(1)求m的值;
(2)若正数a,b,c满足
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a477d3ab9ca571a6627009570665aae8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(1)求m的值;
(2)若正数a,b,c满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5019dcb9082ee14de3a91199ec2369d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/930baae7f787a52570c111394ab18524.png)
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2020-05-18更新
|
219次组卷
|
2卷引用:福建省龙岩市2019-2020学年高三5月教学质量检查数学(理科)试题
解题方法
5 . 已知存在
,使得
,
.
(1)求
的取值范围;
(2)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/799b324b514d6044672c133d8fef2dc4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ead0fd16b61be43dce5f4f387ef38b2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3c270c7508ec18bfae26af47763aab7.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20d6fc9b90f370fbb27552876b650f8f.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55d57f06fe39039e0be9d27ce28b1b35.png)
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2020-03-18更新
|
264次组卷
|
2卷引用:2019届天一大联考海南省高中毕业生班阶段性测试(三)文科数学试题
6 . 已知函数f(x)=|2x+1|﹣2|x﹣m|,m∈N,且f(x)<3恒成立.
(1)求m的值;
(2)当
,
时,f(a)+f(b)=﹣2,证明:
.
(1)求m的值;
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d32f821f50112fab7000a8dc7440d4e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/582a90cb4947dc6a4923ce740e5caf71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12d6a2bda8e15c7af660ab5ec0a828e4.png)
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7 . 设函数
.
(1)当
时,求不等式
的解集;
(2)若
,
,
,证明
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58642282f2cf8b1facd2d493a03d08a8.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f22a4a0dd7307a1323d25331e60782d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4d0bd8141e9d8f1f75a7f2c5c640ede.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/859cf5bf57a50d2da19c0bb926ce9c18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dbdcde4d5737f829703884651fff0a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db2bc58b3402c1bccbc290bd95a34f7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f85193428615f049f80f00c8c7c00862.png)
您最近一年使用:0次
2020-05-09更新
|
203次组卷
|
2卷引用:2020届广东省汕头市高三下学期第一次模拟数学(文)试题
名校
8 . 若实数
、
、
满足
,则称
比
接近
.
(1)若
比
接近
,求
的取值范围;
(2)对于任意的两个不等正数
、
,判断并证明
和
哪个更接近
.
![](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/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86b2f36a11b3ee72115629252bcdbe61.png)
![](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/294f5ba74cdf695fc9a8a8e52f421328.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b958bc8c214008f62c46bbd993b513d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c95b6be4554f03bf496092f1acdfbb89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)对于任意的两个不等正数
![](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/20d6fc9b90f370fbb27552876b650f8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02e2bd4da6f51c9a9b0ead06cfdf89d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92db8e1e24c0ca83f98aa6d44b35852e.png)
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名校
9 . (1)解不等式
;
(2)设正数
满足
,求证:
,并给出等号成立条件.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f58e83084ee6fee8757dcd9a315c31ca.png)
(2)设正数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb4d684b78f6e4a759f11bc25f7c9a53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3a58acd47ea35cf8099b04bdba73cb3.png)
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2019-11-05更新
|
211次组卷
|
4卷引用:【全国百强校】西藏自治区拉萨中学2019届高三第六次月考数学(文)试题
10 . 已知
,
.
(1)解
;
(2)若
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65a990dc3d6cdaf2e46a6280da911820.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf658da376b0f60bfb632739f63e9de5.png)
(1)解
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/447d6f62c09c1d05346fd16a24159f6e.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/572323f86e44407aafd61f72130576ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5140a9fa538f0220ed423e5ce89114bc.png)
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