1 . 设
,如果函数
:
的值域也是
,则称之为一个泛函数,并定义其迭代函数列
:
,
.
(1)请用列表法补全如下函数列;
(2)求证:对任意一个
,存在正整数
(
是与
有关的一个数),使得
;
(3)类比排序不等式:
,
,把
中的10个元素按顺序排成一列记为
,使得10项数列
:
,
,
,…,
的所有项和
最小,并计算出最小值
及此时对应的
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a0367345901c5a716dca179385158c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca4ff0af96ea467337cb30c4c765b5f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84315a088ff3d8b91be22d3b3fcd92ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f99442281052744a6b74b32e0fc2536f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f66a88cbaed58dcf9671ba9240359b9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89b2c1a76a73797e9d5699f6c9929a50.png)
(1)请用列表法补全如下函数列;
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | |
2 | 1 | 7 | 5 | 3 | 4 | 9 | 10 | |||
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/002bda38860f9cbc17dd7b6a03cfecf8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24d5926ad4ccd91c0ec7ff14018de8b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5328785361a76b5e8f75b034a07c5e35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c05b9832b09731a574d4a4adf7448de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b526c87ad796e8cd189f88c33c8d8fd.png)
(3)类比排序不等式:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6a46e678bf9d2df5ad4c782b3dc22f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0109ae0739494164db5b7edae7bfb2e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd643dcc6985a78b5dfe3127610e920e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6eee7088c883282e2f7d95a1856902fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87139b2d092ad22a082bd2a9fa31901d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4aac3646575e397de3dee4ed5d1060b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38f27bc508f582e07211ee24d01bc551.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e77ac9dd1c3046137614c0f62e55190.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd643dcc6985a78b5dfe3127610e920e.png)
您最近一年使用:0次
2 . 阅读下面题目及其解答过程.
以上题目的解答过程中,设置了①~⑤五个空格,如下的表格中为每个空格给出了两个选项,其中只有一个正确,请选出你认为正确的选项,并填写在答题卡的指定位置(只需填写“A”或“B”),
已知函数![]() (1)证明: ![]() (2)证明: ![]() ![]() 解:(1) ![]() ![]() 因为对任意 ![]() ![]() ![]() ![]() (2)③________ ![]() ![]() ![]() ![]() ![]() ![]() 因为 ![]() 所以 ![]() ![]() ![]() 所以 ![]() ![]() 所以 ![]() ![]() |
空格序号 | 选项 |
① | A.![]() ![]() |
② | A.![]() ![]() |
③ | A.任取 B.存在 |
④ | A.![]() ![]() |
⑤ | A.![]() ![]() |
您最近一年使用:0次
名校
3 . 物体的温度
在恒定温度
环境中的变化模型为:
,其中
表示物体所处环境的温度,
是物体的初始温度,
是经过
小时后物体的温度,且
现将与室温相同的食材放进冰箱的冷冻室,如果用以上模型来估算放入冰箱食材的温度变化情况,则食材的温度在单位时间下降的幅度__________ (填写正确选项的序号).
①越来越大;②越来越小;③恒定不变.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52bed88fdf82422e7bee7cf1b37be06a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52bed88fdf82422e7bee7cf1b37be06a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e82eecc1536c7f00ea3abf35b5d251e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/635ccd929471d564cc9d2d96266b34d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/282449e325c8bff71fd98b9815b5ea76.png)
①越来越大;②越来越小;③恒定不变.
您最近一年使用:0次
2021-08-14更新
|
205次组卷
|
2卷引用:北京市海淀区2020-2021学年高二下学期数学期中试题
解题方法
4 . 已知函数
是图象经过点
的幂函数,函数
是定义域为
的奇函数,且当
时,
.
(Ⅰ)求函数
的解析式;
(Ⅱ)求当
时函数
的解析式,并在给定的坐标系中画出
(
)的图象;
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/18/4b25b695-74df-4523-89af-a26cd79dbd4a.png?resizew=185)
(Ⅲ)写出函数
(
)的单调区间.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5511a368692de27c58ec48ce968de4a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1938c093dd2fbcb752d0eb7a18d143b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b916c6d3fb2fdc67421489f207c93903.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2067a6792ec6f17f8a34d9d49366701a.png)
(Ⅰ)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
(Ⅱ)求当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/842c2ef9893cc67e621e272fa0be9926.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1938c093dd2fbcb752d0eb7a18d143b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1938c093dd2fbcb752d0eb7a18d143b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a57996290794e082b21d8f1dfc322a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/18/4b25b695-74df-4523-89af-a26cd79dbd4a.png?resizew=185)
(Ⅲ)写出函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1938c093dd2fbcb752d0eb7a18d143b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a57996290794e082b21d8f1dfc322a.png)
您最近一年使用:0次
2021-07-26更新
|
1064次组卷
|
5卷引用:北京市通州区2020-2021学年高二下学期期末数学试题
北京市通州区2020-2021学年高二下学期期末数学试题(已下线)3.3 幂函数 - 2021-2022学年高一上学期数学新教材配套提升训练(人教A版2019必修第一册)(已下线)第6章 幂函数、指数函数和对数函数 单元综合检测(难点)(单元培优)-2021-2022学年高一数学课后培优练(苏教版2019必修第一册)(已下线)第05讲 幂函数-【帮课堂】2021-2022学年高一数学同步精品讲义(人教A版2019必修第一册)(已下线)专题3.3 幂函数-《讲亮点》2021-2022学年高一数学新教材同步配套讲练(人教A版2019必修第一册)
名校
5 . 已知函数
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/10/900ff4a4-c26f-4d04-9a36-c476345bee62.png?resizew=288)
(1)判断
的奇偶性,在给定的平面直角坐标系中,画出函数
的大致图像;并写出该函数的单调区间;
(2)若函数
有两个零点,求t的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15337b313d470a8da7a2df16881d8844.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da4be581969e846373cd023bf98d4980.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/10/900ff4a4-c26f-4d04-9a36-c476345bee62.png?resizew=288)
(1)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61c388166862b3ccfcc7ca749ebe5949.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61c388166862b3ccfcc7ca749ebe5949.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5eb5d71f90248bbd10b50e48d231e5c8.png)
您最近一年使用:0次
2019-12-08更新
|
307次组卷
|
2卷引用:北京中关村中学2021-2022学年高二上学期开学考试数学试题