把
图象上每个点的横坐标都缩短到原来的
倍,纵坐标不变,再把所得图象向左平移
个单位,得到的图象对应的函数解析式为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12959f65e9db83c446c35d3261a33171.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af9955b5aebb73cd84447e8541f901ac.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
更新时间:2020-03-05 14:14:45
|
【知识点】 求图象变化前(后)的解析式解读
相似题推荐
单选题
|
适中
(0.65)
【推荐1】若函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b11a8a46b3a89aa853b55025c0925230.png)
的部分图象如图所示,则下列叙述正确的是( )
![](https://img.xkw.com/dksih/QBM/2021/3/15/2678296437391360/2687127661682688/STEM/cef9567a25de4422b64a0ec14aafe695.png?resizew=194)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b11a8a46b3a89aa853b55025c0925230.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79c6a2b93fedf4655376d65eefac73ec.png)
![](https://img.xkw.com/dksih/QBM/2021/3/15/2678296437391360/2687127661682688/STEM/cef9567a25de4422b64a0ec14aafe695.png?resizew=194)
A.函数![]() ![]() ![]() |
B.函数![]() ![]() |
C.![]() ![]() |
D.函数![]() ![]() |
您最近一年使用:0次
单选题
|
适中
(0.65)
【推荐2】已知函数
相邻两对称中心之间的距离为
,将函数
的图像向左平移
个单位所得图像关于直线
对称, 则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46626b75bd7bc420bf32b66e3253b40b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33d21761354ad4b6e8243cbdcf39d2da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1ad72d7565699d1ebb741eb0ce12bac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d88591679796c52024d11c4de641bdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95a2ec02caf837c6e7e0b76dd9acc7f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46626b75bd7bc420bf32b66e3253b40b.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
单选题
|
适中
(0.65)
【推荐3】将函数
的图象向右平移
个单位长度后,所得图象对应的函数为
,有下列命题:
①函数
的图象关于直线
对称
②函数
的图象关于点
对称
③函数
在
上单调递增
④函数
在
上恰有5个极值点
其中正确的命题个数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fbad4fa42b2a45907e39d7655248418.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/037fb348109dc2063a268b10eb925a57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1938c093dd2fbcb752d0eb7a18d143b2.png)
①函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17c3319647314c3b6d82958a909acd2a.png)
②函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c84e2a02b32a01b13d65e5e9c4554c59.png)
③函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f440c497e6128a429bae4ae5ea473b37.png)
④函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bccd6a6e85bdf500218a3e75b31f3c.png)
其中正确的命题个数为( )
A.1 | B.2 | C.3 | D.4 |
您最近一年使用:0次