如图为函数
(![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cf2058673db86c374d93bce60efbcc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24c16cc7ecce3766b1de269db898c26d.png)
)图象的一部分.
![](https://img.xkw.com/dksih/QBM/2022/4/30/2969256707227648/2970617285009408/STEM/4ded0c46-f0a2-43c2-b864-c1220342bbd0.png?resizew=248)
(1)求函数f(x)的解析式,并写出f(x)的振幅、周期、初相.
(2)求使得
的x的集合.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42f9555de3ac5de1ea69adc703b48044.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cf2058673db86c374d93bce60efbcc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24c16cc7ecce3766b1de269db898c26d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aec3be90220666e1978031ac114dba3.png)
![](https://img.xkw.com/dksih/QBM/2022/4/30/2969256707227648/2970617285009408/STEM/4ded0c46-f0a2-43c2-b864-c1220342bbd0.png?resizew=248)
(1)求函数f(x)的解析式,并写出f(x)的振幅、周期、初相.
(2)求使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da4d0ff37e4e48ba918f779941c5080e.png)
更新时间:2022-05-02 10:39:14
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【推荐1】已知函数
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【推荐2】某市物价局调查了某种商品
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(2)假设某超市每月初都购进这种商品,且当月售完,求该超市在
年哪些月份销售该商品是盈利的?说明你的理由.
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1372ecf230d89fde3d6568d31d06c8c1.png)
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解题方法
【推荐1】已知函数
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![](https://img.xkw.com/dksih/QBM/2018/8/31/2022372322836480/2024503801266176/STEM/162eac6b-8676-4059-80b6-123a04606698.png?resizew=178)
(1)求
的解析式;
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,求
的值域.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06b48bc0c342478236601dfd0eee14d9.png)
![](https://img.xkw.com/dksih/QBM/2018/8/31/2022372322836480/2024503801266176/STEM/162eac6b-8676-4059-80b6-123a04606698.png?resizew=178)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
(2)设函数
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93e03ad0c315806342d6cd732a0b91a3.png)
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【推荐2】已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af5e2a383cb47eb87493e86c8c40caf0.png)
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(2)将
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(2)将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff14bdd7f2b48c0ce6ba8696c89fbf68.png)
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