1 . 设
,若对任意实数
都有
,定义在区间
上的函数
的图象与
的图象的交点个数是
个,则满足条件的有序实数组
的组数为
![](https://img.xkw.com/dksih/QBM/2016/9/14/1573021933821952/1573021939261440/STEM/32072b10ca374a7fb5ba24a2e7cf32e1.png)
![](https://img.xkw.com/dksih/QBM/2016/9/14/1573021933821952/1573021939261440/STEM/c650a1909bb749afbefbfedb749c745f.png)
![](https://img.xkw.com/dksih/QBM/2016/9/14/1573021933821952/1573021939261440/STEM/a8cc447e4851464ca284cdfb817b8f3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8be57a3547d5ccd15a42d1447156421d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/325f9e2f7784ebdd64292e805884dfa9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58c65d71e57e6e7697e2f627dcd58583.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1370e05a19cba6dd88c087fd1f938046.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2 . 已知点P(t,
)为锐角φ终边上的一点,且cosφ=
,若函数f(x)=2sin(ωx+φ)(ω>0)的图象与直线y=2相邻的两交点之间的距离为π,则函数f(x)的一条对称轴为
![](https://img.xkw.com/dksih/QBM/2016/4/14/1572592954769408/1572592960667648/STEM/d6d3a136413d46539201e8542d55e4c3.png)
![](https://img.xkw.com/dksih/QBM/2016/4/14/1572592954769408/1572592960667648/STEM/227a738ea0cc493faaf6d3bdbf4a5467.png)
A.x=![]() | B.x=![]() | C.x=![]() | D.x=![]() |
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3 . 函数f(x)=2cos(ωx+φ)(ω≠0),对任意x都有f(
+x)=f(
﹣x),则f(
)等于
![](https://img.xkw.com/dksih/QBM/2016/3/9/1572527805251584/1572527811092480/STEM/536f34a091114e488ebd0401e0f210b1.png)
![](https://img.xkw.com/dksih/QBM/2016/3/9/1572527805251584/1572527811092480/STEM/536f34a091114e488ebd0401e0f210b1.png)
![](https://img.xkw.com/dksih/QBM/2016/3/9/1572527805251584/1572527811092480/STEM/536f34a091114e488ebd0401e0f210b1.png)
A.2或0 | B.﹣2或2 | C.0 | D.﹣2或0 |
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