1 . 若对于实数
,
有
,
.
(Ⅰ)求
的最大值
;
(Ⅱ)在(Ⅰ)的条件下,若正实数
,
满足
,证明:
.
![](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/669adbbb51de05a3d4f27e245d004050.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51e1371b5ffd29041b1dc86bfd406d2c.png)
(Ⅰ)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4769398000868a14fa322d0b1df97c6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(Ⅱ)在(Ⅰ)的条件下,若正实数
![](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/3c568952f0da52aa9d0583377981a02f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/255b5812e63fd28e1eba816f71417b5f.png)
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2020-05-13更新
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405次组卷
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5卷引用:天一大联考2019-2020学年高三毕业班阶段性测试(五)理科数学试题
2 . 已知函数
.
(Ⅰ)求不等式
的解集;
(Ⅱ)设函数
的最小值为
,正实数
,
满足
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/306fea7ece95338594f5b7d956220a07.png)
(Ⅰ)求不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a234b3bb2d3292921d8b30f04cd346f8.png)
(Ⅱ)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/083dc129f8721a98e079b0f34abd3196.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52f3eaf765a0a41b149e7896735ed1bd.png)
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解题方法
3 . 已知函数
.
(1)证明:
.
(2)若函数
的解集为
,求实数
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5fa4147222e522c9cd6c3a70fade5ae.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28280ea1a2aabb7f4d1f7fa6f44a7e8a.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c8dd04f8708cdf4bd0a8241a10ec94f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f545a87bd651b061768225748b78c82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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2020-04-23更新
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2卷引用:2019届百师联盟全国高三冲刺考(三)全国I卷文科数学试卷
解题方法
4 . 已知实数
满足
且
.
(1)证明:
;
(2)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2684b72f9f38f5046c8ecd4280b7b14b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5be97cd1c7111b654d87d8fbb63b6a84.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7451d554f5ae3e7788a8c2fc7e912543.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2533c09d4efe229490a509902d812566.png)
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2020-04-16更新
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155次组卷
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2卷引用:2020届天一大联考高三高考全真模拟卷(三)数学文科试题
名校
解题方法
5 . 已知![](https://staticzujuan.xkw.com/quesimg/Upload/formula/925aa1cb437064575b27b6933eae8a50.png)
(1)求不等式
的解集;
(2)若f(x)的最小值为M,且a+b+c=M(a,b,c∈R),求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/925aa1cb437064575b27b6933eae8a50.png)
(1)求不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb88089422e2e6d144a9ffacbad9426f.png)
(2)若f(x)的最小值为M,且a+b+c=M(a,b,c∈R),求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91d6f7362b0ac505396fdab5f5f66896.png)
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2020-03-16更新
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436次组卷
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6卷引用:2020届全国百强名校高三下学期”领军考试“数学(理)试题
6 . 已知函数
.
(1)若
,求不等式
的解集;
(2)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8274d1e04f1a5a9602b3e0fc3745f06b.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/711b21672fd907c5c92fee1d649e7003.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c7679f885826301bb5a826ba7bcea01.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d11e3b39ba495a5f8a70bb4c9c5a052.png)
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2019-12-27更新
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277次组卷
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5卷引用:百校联盟(全国I卷)2019-2020学年高三12月教育教学质量监测考试数学(文)试题
百校联盟(全国I卷)2019-2020学年高三12月教育教学质量监测考试数学(文)试题百校联盟(全国I卷)2019-2020学年高三上学期12月教育教学质量监测考试数学(理)试题百校联盟2019-2020学年高三上学期教育教学质量监测考试文科数学(已下线)2020届高三12月第03期(考点14)(文科)-《新题速递·数学》(已下线)2020届高三12月第03期(考点15)(理科)-《新题速递·数学》
名校
7 . 已知a,b为正数,且满足
.
(1)求证:
;
(2)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5be97cd1c7111b654d87d8fbb63b6a84.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/741973dc565d6f651334ee02254bc733.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7901ce07088e3883df769c01201854f6.png)
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2020-01-06更新
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5卷引用:河南省名校联盟2019-2020学年高三11月教学质量检测数学(理)试题
8 . 已知![](https://staticzujuan.xkw.com/quesimg/Upload/formula/743facce95b456d0637ee83305f9b61b.png)
(1)求
的最小值
;
(2)若
,
,求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/743facce95b456d0637ee83305f9b61b.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f352f97803f55b21c0dd569caa4956f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3c270c7508ec18bfae26af47763aab7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034a0f4d3755f5f4934e5f11b1296c6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2baea9c5baffd3bcd16de7841d0bb7e7.png)
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2019-12-11更新
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564次组卷
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5卷引用:四省八校2019-2020学年高三第二次教学质量检测数学(理)试题
四省八校2019-2020学年高三第二次教学质量检测数学(理)试题四省八校2019-2020学年高三第二次教学质量检测数学文科试题(已下线)2022年全国高考甲卷数学(理)试题变式题13-16(已下线)2022年全国高考甲卷数学(理)试题变式题13-16题(已下线)2022年全国高考甲卷数学(理)试题变式题21-23题
9 . 已知正数a,b,c满足
.求证:
(1)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/463f2fd2e30b12e61b1c11a201830606.png)
(2)若存在非零实数t.使得不等式
成立,求实数x的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/751e274e9107d780c39ba9c49d6daefb.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/463f2fd2e30b12e61b1c11a201830606.png)
(2)若存在非零实数t.使得不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2ec303786f1404273c754a78e26b3f2.png)
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名校
10 . 已知
,且
.
(1)求
的最大值;
(2)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5c4d3cd39c23987c9088416ce670a03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/751e274e9107d780c39ba9c49d6daefb.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6503a6330a44bc6a915d3b02c2a396d6.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acb8446f40ec510faccf07efab8fd838.png)
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2019-11-04更新
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621次组卷
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5卷引用:2019年11月四川省资阳市高三上学期第一次诊断性考试数学(理)试题