名校
1 . 已知函数
.
![](https://img.xkw.com/dksih/QBM/2022/3/24/2943038967545856/2943995671642112/STEM/2af6b1aa2f774f78a1cf027869f79beb.png?resizew=303)
(1)求它的振幅、最小正周期、初相;
(2)画出函数
在
上的图象,并写出函数在
上的最大值及此时
的取值.(请列表、描点作图)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1996d2a7f05384f4f55dc3a9c5d874b4.png)
![](https://img.xkw.com/dksih/QBM/2022/3/24/2943038967545856/2943995671642112/STEM/2af6b1aa2f774f78a1cf027869f79beb.png?resizew=303)
(1)求它的振幅、最小正周期、初相;
(2)画出函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15641191c56b4df40e30f0b10c30243a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15641191c56b4df40e30f0b10c30243a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
您最近一年使用:0次
名校
解题方法
2 . 已知函数
.
(1)求函数
的最小正周期;
(2)五点法画出
在区间
上的图象.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31eab5a3e066fcfada1f05e0cf37776d.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)五点法画出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/113cc2eb1633f22868d0f178b7dbdd74.png)
您最近一年使用:0次