名校
解题方法
1 . 已知函数
的定义域为
,
,
,且
在区间
上单调递减.
(1)求证:
;
(2)求
的值;
(3)当
时,求不等式
的解集.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f41c7798e8266916b8501e3837194407.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/707f481ce3097ef1da3af9964bd36bb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9da1ddf59efd582614505be50e813af1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb6bfefa5b41faae17987876d570685d.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5980a054af3e565d5d0511b14695aaf1.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35e861f148f57d5bcdd82cd1fec3d594.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a57996290794e082b21d8f1dfc322a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13a3d8f7ee39ac3245c840a40f8af63d.png)
您最近一年使用:0次
2024-01-24更新
|
347次组卷
|
2卷引用:广东省广州市越秀区2023-2024学年高一上学期期末数学试题
2 . 如图1“Omniverse雕塑”将数学和物理动力学完美融合,遵循周而复始,成就无限,局部可以抽象成如图2,点P以
为起始点,在以O为圆心,半径为2(单位:10米),按顺时针旋转且转速为
rad/s(相对于O点转轴的速度)的圆周上,点O到地面的距离为a,且
(单位:10米),点Q在以P为圆心,半径为1(单位:10米)的圆周上,且在旋转过程中,点Q恒在点P的正上方,设转动时间为t秒,建立如图3平面直角坐标系
.
(1)求经过t秒后,点P到地面的距离PH;
(2)若
时,圆周上存在4个不同点P,使得
成立,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf9f50605db5d5f8f3a01ee8e474a112.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15615de1a6df206dbd081251f676578e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2584d4e78881413d8ddd1ec84011db2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7795aec93c2c7ac2fd93e6747ca6516c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/29/02068183-41e7-46dd-8916-f69c8e00bae1.png?resizew=177)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/29/5e8787db-81e4-4dec-ac9f-5aa14404dfc1.png?resizew=250)
(1)求经过t秒后,点P到地面的距离PH;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b8a359aff6030dbfeef0f628341b07d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe8b38f88b0f72334f0530fd827fefb.png)
您最近一年使用:0次
解题方法
3 . 我们知道
与
(
且
)互为反函数,它们具有以下性质:①图象关于直线
对称;②
的定义域是
的值域,
的值域是
的定义域,反之亦然;③若点
在函数
的图象上,则点
一定在函数
的图象上.
(1)若函数
与
互为反函数,求实数a,b的值;
(2)运用(1)题中得到的函数
,若对
,使得
成立,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da53929a8f67b9aa3827fdbd73ebd265.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82869dad28f771d088772a2c2b08b187.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c400a615a16a1662de98dfb4e49d58d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d77f5191798242b7b9b88a75e17e4425.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da53929a8f67b9aa3827fdbd73ebd265.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82869dad28f771d088772a2c2b08b187.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da53929a8f67b9aa3827fdbd73ebd265.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82869dad28f771d088772a2c2b08b187.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a64d924836b4292239d9726c6473d7f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da53929a8f67b9aa3827fdbd73ebd265.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/493d16a261e909d2faf6b5386b8fa5d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82869dad28f771d088772a2c2b08b187.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bab3a3d264dba79d3e2995bec4ad3ea5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb1a3f631ea291a932f4bc466556a2c1.png)
(2)运用(1)题中得到的函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c0ed188d083966baaae94e6b86064f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/976472fb4679ad2d8ec2f928f684650b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d25a5b1e41c9fa76ece3b27d81b0e8f.png)
您最近一年使用:0次
4 . 对于函数
,记所有满足
,都有
的函数构成集合
;所有满足
,都有
的函数构成集合
.
(1)分别判断下列函数是否为集合
中的元素,并说明理由,
①
;②
;
(2)若
(
)是集合
中的元素,求
的最小值;
(3)若
,求证:
是
的充分不必要条件.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/264f35bf099b45c499c9529f61ce8579.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9c7d35c770f126de82f6160bcfff0ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08d928af44759824e38d2254270b1e55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad5ceb8c88f1b42f009d17854744d208.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(1)分别判断下列函数是否为集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d01cb00904ee16178c7c35d7e0a8d3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b1c079afd1b058adc67a50f48f3d466.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba87ca31345dd12f5604d35f3c326a40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce3a34d6f60032718820c3da2b07786b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c532b5af7b88f1c21a7584cfac5fea6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfcd04b625189228b6d697edf095f7c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/414c7ae60baeadabe19cd4a953522437.png)
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名校
5 . 已知集合
,其中
且
,非空集合
,记
为集合B中所有元素之和,并规定当
中只有一个元素
时,
.
(1)若
,写出所有可能的集合B;
(2)若
,且
是12的倍数,求集合B的个数;
(3)若
,证明:存在非空集合
,使得
是
的倍数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bcbde10b7bc82536072ca38f32b2f8b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cca1d86c9f078347773f700fee49d1d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe11d564517c04437b9884da859002b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/caf22d7d1a965bda25168a233fb6290c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75fd9ec9c065d4337a8b1ebf2abc6a1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9bc3a22bc9cb056df1e6d5218877c8c.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b6e90ea92c80c31653e4ac972bf56c8.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d725be6acff620b47bb7a8a7a0c6e5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75fd9ec9c065d4337a8b1ebf2abc6a1a.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8af5e68b8592c14157df8db05904c8d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/caf22d7d1a965bda25168a233fb6290c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75fd9ec9c065d4337a8b1ebf2abc6a1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2d51f9147b8265c0276c1f2c2659197.png)
您最近一年使用:0次
2024-01-20更新
|
304次组卷
|
2卷引用:北京市朝阳区2023-2024学年高一上学期期末质量检测数学试题
名校
6 . 设正整数
,若由实数组成的集合
满足如下性质,则称
为
集合:对
中任意四个不同的元素
,均有
.
(1)判断集合
和
是否为
集合,说明理由;
(2)若集合
为
集合,求
中大于1的元素的可能个数;
(3)若集合
为
集合,求证:
中元素不能全为正实数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5818ede14d21f6df9ef9c2bfe09286c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ea7fcdb5423c1c8c032a3efcf245682.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ead6fe08a80379f496eab2129655bd5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d10449bc77d692a7270e0f20a68cdf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5be0f5b704e46d64481197273b2e2557.png)
(1)判断集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85ccef0bee54b52b069616251fbea584.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea9cba4a6e473e359492361f51d8556a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/def70b21b73d0d0156f8ffb526413d97.png)
(2)若集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b37fb28a9d01dfd12b13bce4ac4c3c5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/def70b21b73d0d0156f8ffb526413d97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(3)若集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ead6fe08a80379f496eab2129655bd5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
您最近一年使用:0次
2024-01-19更新
|
207次组卷
|
2卷引用:北京市朝阳区2023-2024学年高二上学期期末质量检测数学试题
名校
7 . 已知函数
的定义域均为
,给出下面两个定义:
①若存在唯一的
,使得
,则称
与
关于
唯一交换;
②若对任意的
,均有
,则称
与
关于
任意交换.
(1)请判断函数
与
关于
是唯一交换还是任意交换,并说明理由;
(2)设
,若存在函数
,使得
与
关于
任意交换,求b的值;
(3)在(2)的条件下,若
与
关于
唯一交换,求a的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc4978f812146b4566467ee255fc1c71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
①若存在唯一的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a57996290794e082b21d8f1dfc322a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c21349867ead1c5d88dc7a618e073dfa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0eb7df298a9364b36e079a61caec815c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
②若对任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a57996290794e082b21d8f1dfc322a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c21349867ead1c5d88dc7a618e073dfa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0eb7df298a9364b36e079a61caec815c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(1)请判断函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34e0ba94c781da05ac6ca38261904b40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c89a5f35cd4e4764d285fce93350443b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/318a16f1950d06e5500c76d8f81a507f.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00b0e163359b6ed8f05a408790e719fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0eb7df298a9364b36e079a61caec815c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0eb7df298a9364b36e079a61caec815c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(3)在(2)的条件下,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b8b2248e52559f7d86566313a7c1040.png)
您最近一年使用:0次
2024-01-17更新
|
611次组卷
|
5卷引用:北京市海淀区2023-2024学年高一上学期期末考试数学试题
8 . (1)
是定义在正整数集上的函数,并且满足
①当
为正整数时,
;
②当
为非负整数时,
.
求
的值.
(2)函数
定义在有序正整数对的集合上,且满足下列性质:
①
;②
;③
.
求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38fcec7af3520884b173b29bda6c657a.png)
①当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f6c12705300de947fc04865b2747cd9.png)
②当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6360d35614281c3a6b08179ef77cc4c.png)
求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/495955d39b954d26852f3f58c9df0a03.png)
(2)函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca4ff0af96ea467337cb30c4c765b5f7.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e21e386e8449fe122efe8789ab77e45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/217758c83175763d7d3c306d12c22176.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e67dd773c99cf71254097f7a838ae7a0.png)
求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30547752a04f8877c99a1084c6e145e3.png)
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名校
解题方法
9 . 对于定义域在
上的函数
,定义
.设区间
,对于区间
上的任意给定的两个自变量的值
、
,当
时,总有
,则称
是
的“
函数”.
(1)判断函数
是否存在“
函数”,请说明理由;
(2)若非常值函数
是奇函数,求证:
存在“
函数”的充要条件是存在常数
,使得
;
(3)若函数
与函数
的定义域都为
,且均存在“
函数”,求实数
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d25597c0f369019a0901849bc12da1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cb71b8c83c4f5a3146e3871b6308d4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e105760638b22b26ff8bec4354255e4c.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/26d8dafc71b106f39f4e15442220897b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c61c8d37c767ba727cc7f5f7e00a7d96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
(1)判断函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d6f99885e464b84f1dc2b897070cbdd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
(2)若非常值函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0d314b6f3729e70a0d0c60414aec69c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2c9418985f008bb9ab6482930f187dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/950c0c0b3b3c63fd0e7700e22c0f7bd9.png)
(3)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d17dcc171997459b17118083b339145.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ccbf6c35d8fc9e12a15cc7e0643ca35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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2024-01-13更新
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514次组卷
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6卷引用:上海市东华大学附属奉贤致远中学2023-2024学年高一上学期12月教学评估数学试题
上海市东华大学附属奉贤致远中学2023-2024学年高一上学期12月教学评估数学试题上海市奉贤区2022-2023学年高一上学期1月期末练习数学试题(已下线)高一上学期期末考试解答题压轴题50题专练-举一反三系列(已下线)单元高难问题03函数恒成立问题和存在性问题-【倍速学习法】(沪教版2020必修第一册)(已下线)专题14函数的基本性质-【倍速学习法】(沪教版2020必修第一册)江西省上饶市婺源天佑中学2023-2024学年高一上学期期末模拟数学试题
10 . 定义:给定函数
,若存在实数
、
,当
、
、
有意义时,
总成立,则称函数
具有“
性质”.
(1)判别函数
是否具有“
性质”,若是,写出
、
的值,若不是,说明理由;
(2)求证:函数
(
且
)不具有“
性质”;
(3)设定义域为
的奇函数
具有“
性质”,且当
时,
,若对
,函数
有5个零点,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.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/f63d7758a927384c13052ae432c20a23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fe17821ea81c6fec60bd5273901bd50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ecb084837b614de935871d8f3dd2e1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86c16d349946f1a9fbc12b28e7e9321c.png)
(1)判别函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66d6e08526a91f8dfd160e7da2f92a3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86c16d349946f1a9fbc12b28e7e9321c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
(2)求证:函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82869dad28f771d088772a2c2b08b187.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c400a615a16a1662de98dfb4e49d58d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86c16d349946f1a9fbc12b28e7e9321c.png)
(3)设定义域为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bae15be500f98d647a07fee39c95d041.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eaae91ed6da60e86e3bb9b3eb7e03e60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33ca276a67d4eca39a3c57dfab895e48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/835eec12ec99561a3655c296570d75be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b0db56c33be80c68078d92ba0ca47bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
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