已知函数
满足
,将函数
图象向左平移
个单位后其图象关于y轴对称,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41a6a2f16b072c0ad400632f90846df5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed722062544ed98404fef931ecb41fa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4862c361cb12b024ca062dd9d8999ff1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6581916f5a65edfea257c804efee007e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
更新时间:2022-03-05 14:41:06
|
相似题推荐
单选题
|
适中
(0.65)
【推荐1】若函数
的图象与
的图象都关于直线
对称,则
与
的值分别为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd7a72601fd2208f357d9c6b9a598613.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbbe721de43c4eae4ff29c71cd0be089.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb2133a8576a013055f8fab50f52c215.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/074c228ffc7b1e306f8410afe7bc4b5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6581916f5a65edfea257c804efee007e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
单选题
|
适中
(0.65)
名校
【推荐2】已知函数
是在区间
上的单调减函数,其图象关于直线
对称,且f(x)的一个零点是
,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/973bd09ae9775d390177e5bc07d091c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6a3989a804d14ed5c90cd4d4a3bed12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bb5f29923d506b1afae9f608779cb32.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae52d0002d5ce7cc76992c1d0bb438a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/074c228ffc7b1e306f8410afe7bc4b5c.png)
A.2 | B.12 | C.4 | D.8 |
您最近一年使用:0次
单选题
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适中
(0.65)
名校
解题方法
【推荐1】某智能主动降噪耳机工作的原理是利用芯片生成与噪音的相位相反的声波,通过两者叠加完全抵消掉噪音,如下图所示,已知噪音的声波曲线
(其中
,
,
)的振幅为1,周期为2,初相位为
,则用来降噪的声波曲线的解析式是( )
![](https://img.xkw.com/dksih/QBM/2022/8/8/3040010537836544/3040315888115712/STEM/0d185bc17dd34b2f9acfe40f9db3600b.png?resizew=255)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b659146043ee17e549578998318b2c12.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/6aec3be90220666e1978031ac114dba3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1ad72d7565699d1ebb741eb0ce12bac.png)
![](https://img.xkw.com/dksih/QBM/2022/8/8/3040010537836544/3040315888115712/STEM/0d185bc17dd34b2f9acfe40f9db3600b.png?resizew=255)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
单选题
|
适中
(0.65)
名校
解题方法
【推荐2】把函数
的图象向左平移
个单位长度,可得函数
的图象,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7380f2e7fc9834b98d20192dd7d2003f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b787a0e5088175bbc32282494871b5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92e8fe658ada9d89374fe831a8a86638.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/934d37c81b2266c7b86bcc11afaf5f91.png)
A.7 | B.1 |
C.8 | D.-1 |
您最近一年使用:0次