名校
解题方法
1 . 设函数
的定义域为D,对于区间
,若满足以下两条性质之一,则称I为
的一个“
区间”.
性质1:对任意
,有
;
性质2:对任意
,有
.
(1)分别判断区间
是否为下列两函数的“
区间”(直接写出结论);
①
; ②
;
(2)若
是函数
的“
区间”,求m的取值范围;
(3)已知定义在
上,且图象连续不断的函数
满足:对任意
,且
,有
.求证:
存在“
区间”,且存在
,使得
不属于
的所有“
区间”.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46a67b23b778224005c7bf0097ff488f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0047f659c182291c84c224df6b5e993f.png)
性质1:对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bb6324279df94decba955e04ccfa9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c1e560364dea022693928309250f158.png)
性质2:对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bb6324279df94decba955e04ccfa9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51dc07201b5f984fafd2cf968bec88ff.png)
(1)分别判断区间
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6c1756b564bf1d998d8179637011c88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0047f659c182291c84c224df6b5e993f.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb68ccf2d913a83e68df3524263aa8dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85410ff00c81839ff9a64bf86dc36f5e.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/301bacc282b75b95f9bee92a618d544f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d4cd02b69b76000f9b9826d9929a324.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0047f659c182291c84c224df6b5e993f.png)
(3)已知定义在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fd423a80d5b6fea8753fa1813cfbcc4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33bd24e647a626899a243a3f3984f90a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd809d14a09c538823c43745fe3aee13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0047f659c182291c84c224df6b5e993f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f07ad90ca228230b03f12eb48ee0c1d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0047f659c182291c84c224df6b5e993f.png)
您最近一年使用:0次
2023-01-05更新
|
858次组卷
|
5卷引用:北京市西城区2022-2023学年高一上学期数学期末试题
北京市西城区2022-2023学年高一上学期数学期末试题(已下线)上海市浦东新区华东师范大学第二附属中学2023-2024学年高一上学期期末质量检测数学试卷湖南省衡阳市衡钢中学2022-2023学年高一下学期开学考试数学试题上海市行知中学2023-2024学年高一上学期第二次质量检测(12月)数学试题(已下线)专题03 函数的概念与性质3-2024年高一数学寒假作业单元合订本
名校
解题方法
2 . 已知
且
,函数
在R上是单调减函数,且满足下列三个条件中的两个.
①函数
为奇函数;②
;③
.
(1)从中选择的两个条件的序号为_____,依所选择的条件求得
____,
____;
(2)利用单调性定义证明函数
在
上单调递减;
(3)在(1)的情况下,若方程
在
上有且只有一个实根,求实数
的取值范围.
![](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/6fddb1b1e4b0b8eb17095e644ff0c1f1.png)
①函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26adb8926e85d93d87e254077e251d8b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b17d5250c5d7f56bc5750bbb1c1182d9.png)
(1)从中选择的两个条件的序号为_____,依所选择的条件求得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ccd4162c7d09f970cb77cadacdbe521.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
(2)利用单调性定义证明函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c21c3e410f4ca150122cbf1baaec812d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d562dc22dfb3b81d0c3f88b54d063c2f.png)
(3)在(1)的情况下,若方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78bfcba69656a2f800a54ac9298ec1b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e11f4ca0e7ace69f92130d0525bcdb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
2023-01-05更新
|
910次组卷
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2卷引用:北京市海淀区2022-2023学年高一上学期期末数学试题
名校
3 . 设函数
,
,若曲线
上存在一点
,使得点
关于原点
的对称点在曲线
上,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec5748527c15e370dcf4230ad2d0e1b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c829c3f2e2765100d9cf414cc2e6203c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a1cfb60420ff7e72c1b9d64f69ae063.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.有最小值![]() | B.有最小值![]() |
C.有最大值![]() | D.有最大值![]() |
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