1 . 已知函数
,
.
(1)写出
的单调区间,并用单调性的定义证明;
(2)若
,解关于
的不等式
;
(3)证明:
恰有两个零点m,
,且
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0676c35e842a3a86d3b752cae5ca0576.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
(1)写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e0a1faf66cdc3558d05205fd8f5187d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/018857ec6e498113b3b12a730d9313da.png)
(3)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3484588665d34c47ac3d2ef5c7ef5f25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9947fdb8b6b390de995711ef15d82e70.png)
您最近一年使用:0次
名校
2 . 指数级增长又称为爆炸式增长,其中一条结论是:当
时,指数函数
在区间
上的平均变化率随t的增大而增大.
已知实数a,b,满足
.
(1)比较
和
的大小;
(2)当
时,比较
和
的大小;
(3)当
时,判断
的符号.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d33da711e50e96568facb18cef27165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da53929a8f67b9aa3827fdbd73ebd265.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bb83ad27846200a8ac81ff4cf7fd510.png)
已知实数a,b,满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dffdd1af016ecdb6d75a43e089a06e62.png)
(1)比较
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdaba8b1591046933f2f725b6b1bff7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20d6fc9b90f370fbb27552876b650f8f.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c0d2b7d558996d2e2a2ed1ce3011d7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9237dbe3a4f28962ef2870b4e7dab599.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bed40cc05a505673f9205c4dba2f1b6f.png)
您最近一年使用:0次
2023-03-23更新
|
950次组卷
|
3卷引用:山东省烟台市莱州市第一中学2023-2024学年高一上学期1月月考数学试题
解题方法
3 . 定义在区间
上的函数
,若满足:
,
,都有
,则称
是区间
上的有界函数,实数
称为函数
的上界.
(1)设
,证明:
是
上的有界函数;
(2)若函数
是区间
上,以3为上界的有界函数,求实数
的取值范围.
![](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/fc1da2db85b44ae9ced8c09cd19593e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36338db3cdaf11194eb0d9e29100a457.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aea232de27d21a2646fd4520ea0726bf.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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42079a9a940b17edebcd88ae599c2f6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d188ec2580e273ce87e51653a2177ee.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5ad2c76ddc0c39ae230f13d3f1c02e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e11f4ca0e7ace69f92130d0525bcdb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2011高三上·山东菏泽·专题练习
4 . 已知函数
有如下性质:如果常数
,那么该函数在区间
上是减函数,在
上是增函数.
(1)如果函数
(
)的值域为
,求b的值;
(2)研究函数
(常数
)在定义域上的单调性,并说明理由;
(3)对函数
和
(常数
)作出推广,使它们都是你所推广的函数的特例.研究推广后的函数的单调性(只须写出结论,不必证明),并求函数
(n是正整数)在区间
上的最大值和最小值(可利用你的研究结论).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae543122a9a00feb76c84fd2ee6d1369.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/311f24add812e85cff437a699caa202e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c049415b40b1e5d3ddbd8c6b945c987c.png)
(1)如果函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d33063230cfd1e497b93e1b87bc1a154.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d875db0083b0b82f8864f1b25f7f7c7.png)
(2)研究函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65c845cf8af8bfb0463e9797cc5628b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cec12441802f71e803efaf2c62ee588.png)
(3)对函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae543122a9a00feb76c84fd2ee6d1369.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d74fef9c96eb3f55872919e7054f087a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/300f5517aa55c4c832e2008c18f436a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b448fe164c2c2931805e3b3847dcdd75.png)
您最近一年使用:0次
2021-09-25更新
|
1262次组卷
|
7卷引用:2012届山东省郓城一中高三数学10月单元练习(函数二)