已知函数
.
(1)用五点法画出它在一个周期内的闭区间上的图象;
(2)指出f(x)的周期、振幅、初相、对称轴;
(3)此函数图象由y=sinx的图象怎样变换得到?(注:y轴上每一竖格长为1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3bab848d01ae293b31654a8e25d0409.png)
(1)用五点法画出它在一个周期内的闭区间上的图象;
(2)指出f(x)的周期、振幅、初相、对称轴;
(3)此函数图象由y=sinx的图象怎样变换得到?(注:y轴上每一竖格长为1)
![](https://img.xkw.com/dksih/QBM/2018/4/8/1919532198649856/1922530968199168/STEM/22dc07dd056342a19ae77e9e05cf9777.png?resizew=303)
更新时间:2018-04-12 15:42:10
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【知识点】 三角函数图象的综合应用解读
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解答题-问答题
|
适中
(0.65)
【推荐1】已知函数
的定义域为
,满足如下两个条件:
①对于任意
,都有
成立;
②函数
的所有正数零点中存在最小值为
.
则称函数
具有性质
.
(1)若函数
具有性质
,求
的值;
(2)若函数
具有性质
,求
和
的值;
(3)判断函数
和
是否具有性质
,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
①对于任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d26927f1f0be044942dfce30c3607158.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/527aa842d9636f25f89b17e335878185.png)
②函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
则称函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be8f69402300f6ed932697689212e91c.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be8f69402300f6ed932697689212e91c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e38fffbc7ab9882480f4faa72390e23.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0030881bcbd9af6835f17ab4689bf0e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a5d8bc28ee110a9540f383828b7d245.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/074c228ffc7b1e306f8410afe7bc4b5c.png)
(3)判断函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/976581d4a974fe50f9f29d430c1289f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3e27fde05cc2a11caf3422875b58372.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be8f69402300f6ed932697689212e91c.png)
您最近一年使用:0次
解答题-问答题
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适中
(0.65)
【推荐2】已知函数
,
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(1)求
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(2)若函数
有且仅有一个零点,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/781e2ee585c9d4471e63f33055f02059.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ce485410257c9c1fae9d87ce3e44cc8.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/039f9392112593405d4c0f1bea7d31f3.png)
您最近一年使用:0次