名校
解题方法
1 . 已知
,有下列命题:
①函数
在区间
上是严格增函数;
②函数
的图象关于直线
成轴对称;
③函数
的图象与
轴有且仅有两个公共点;
④若
,但
,则
.
其中真命题的序号是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3ab0f9389e8c6fca43418f571da9b11.png)
①函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25f114df5ceabdb7e5fd3fdad4eaf056.png)
②函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/707ea658f3a9359f5740d5aab48f7948.png)
③函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
④若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33bd24e647a626899a243a3f3984f90a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abf7c745cd02f4620a175cf00ec85e69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/089c3608df214a5bc8a25d47550d2927.png)
其中真命题的序号是
您最近一年使用:0次
解题方法
2 . 用函数的观点解不等式
,该不等式的解集为_______________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51beb60ca4cab09e5223ead72c327f89.png)
您最近一年使用:0次
3 . 函数
的定义域为
,若满足:①
在
内是单调函数;②存在
使得
在
上的值域为
,那么就称
为“减半函数”.现有函数
是“减半函数”,则
的取值范围是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84b5d7f11b384d577a9f4bb6b876d880.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8401162537a63e6c48c066e9f5fcdf6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b5debe561b6909fe9c7792b3da8593c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74dd2f92c41cea6b68795d996db0b0a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
解题方法
4 . “学如逆水行舟,不进则退;心似平原跑马,易放难收.”(明·《增广贤文》)是勉励人们专心学习的.如果每天的“进步”率都是1%,那么一年后是
;如果每天的“退步”率都是1%,那么一年后是
,一年后“进步”的是“退步”的
倍.甲乙两位同学以相同分数考入某高中,甲同学每天以饱满的热情去学习,每天都在“进步”,乙同学沉迷于手机,每天都在“退步”.如果甲每月的“进步”率和乙每月的“退步”率都是20%,那么甲“进步”的是乙“退步”的100倍需要经过的时间大约是________ 个月(四舍五入,精确到整数)(参考数据:
,
).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0c95decc4632d8b5fb1ca07458e9af9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5984ad57425532388d20d52995d1ce6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a77f141d562af3acb28e30ab6e8ded45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/282724a3b2b45f1966a91389fdcedfcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb87d922f294f2696c2b12d2a7d2f8b0.png)
您最近一年使用:0次
5 . 若函数
在
上的最大值为2,则实数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c797ec2384401165faf73a6d4489f75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a92ba8b43bebdf7d6c40917f4d3e110.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
您最近一年使用:0次
6 . 若对数函数
和函数
在区间
上均单调递增,则实数
的取值范围是___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5aed836238aee5b6084b5837e83535a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f153f03a6c71150698f38af2884ff51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d562dc22dfb3b81d0c3f88b54d063c2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
解题方法
7 . 函数
的定义域是_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05e9281d819252c3a12efb8dd31059f9.png)
您最近一年使用:0次
名校
解题方法
8 . 已知函数
的值域为
,则函数
的定义域为______________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cce427e97019745d570dd2728027fba5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f84d41b94678bd8e3c114f40adb5425c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bde1ab0a0348d09bc2e700dcac19dd1.png)
您最近一年使用:0次
9 . 已知
对于任意两个不相等实数
,都有
成立,则实数
的取值范围为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/419e15ad59d6217d7baa5f3db2264456.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/698cf53f76a1d637dfe2732d0a866eec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
10 . 下列各个对数中,其值为负的有_________ ,其值在0和1之间的有________ ,其值大于1的有________ .
(1)
;(2)
;(3)
;(4)
;(5)
;(6)
;(7)
;(8)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e24d42f61784c642e9eb1316afdd2ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc385af4878aa961bc3ec5ee6cc223ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34a3cb5454b762817ba7619e53941e42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26a026f4c1fe9358ec8b56653bf22e18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a355f4cf9f2a4c8133ea1b254a855f89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1ec2505b7de20257f902923f5e1b62e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fca8e7ed713e9cf040711a9de3b5d220.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a220c2a9832df05656d3673960a190e.png)
您最近一年使用:0次