1 . 已知函数
满足
,且
在
上单调递减.
(1)求
的单调递增区间;
(2)已知负数
满足
恒成立,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bde5f90105927cdb6fcecd15e7349e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/558a2ecdce526b2da399693537426986.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e64f296ea8595bf2a73b5846a4cb63c4.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)已知负数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f5c8df16a34773600a1217e90414162.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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解题方法
2 . 下列表述正确的有( )
A.在平行四边形![]() ![]() |
B.在![]() ![]() ![]() |
C.在![]() ![]() ![]() ![]() ![]() ![]() |
D.函数![]() ![]() |
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3 . 从本质上来讲,声音实际上是一种简谐振动产生的机械波,也称声波.声音两个最主要的要素:响度和音调,分别由振动的振幅和频率刻画.其中最基本的声波就是简谐振动所产生的正弦波.纯音是以某个固定频率进行简谐振动所产生的声波,且纯音的函数可以表示为:
,其中
,
,则这个函数的频率
为___________ (写出表达式即可)(注:频率是周期的倒数)一般说的
,
,
,
,
,
,
又是什么呢?这些唱名是音调的一种记法,音调
与频率
之间的关系为
.已知标准音
(也是纯音)的音调为
,那么标准音
对应的函数中![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9448bf1d6136b3a108e7ea60506ad39.png)
___________ .已知标准音
和标准音
的频率比为
,那么标准音
的音调为___________ .(取
,
,结果精确到小数点后两位).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e7c7212e16f10017a19204af1fb09e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13378be06b6b01bcad1d261ff14e87cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4456675a5dbe545462a22cef9aca8fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca4ff0af96ea467337cb30c4c765b5f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dd046d79dd0da3d97db1084d9e5a8dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adf06fea4c46faf2af9fb80e83929ce3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5939c344ea0a6705f2fb114d8fcc8954.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bbf7540b99474d0aa6e6d8556a4b399.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/812d71a0a42fa3007542c8a68a654188.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df9841d7e004d702fd65cadbb10e4220.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8be8824febd2a5f71b3921b1879b933b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/171102a883b22fe6ca578efc8926f5b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca4ff0af96ea467337cb30c4c765b5f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a84b95bf095fdba387cdf259105369.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df9841d7e004d702fd65cadbb10e4220.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ef8f307eb43bf38ddc6b1b33b94b82f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df9841d7e004d702fd65cadbb10e4220.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9448bf1d6136b3a108e7ea60506ad39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dd046d79dd0da3d97db1084d9e5a8dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df9841d7e004d702fd65cadbb10e4220.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf1484ddc948caf40e4c3243bc959584.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dd046d79dd0da3d97db1084d9e5a8dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49f8340ff8ef6994abddab919418423b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf0227933292a639a0e4e719d33f93a0.png)
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4 . 已知函数
,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96065ac683df75f0354cae677ee48c7e.png)
A.若对于任意的![]() ![]() ![]() |
B.若对于任意的![]() ![]() ![]() |
C.当![]() ![]() ![]() ![]() ![]() |
D.当![]() ![]() ![]() ![]() ![]() ![]() |
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2022-03-31更新
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2535次组卷
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8卷引用:专题04 ω 的取值范围与最值问题(2)
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