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解题方法
1 . 已知
为定义在
上且周期为5的函数,当
时,
.则下列说法中正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f423993ffbd13fcbe7b2768ff64c37f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17ff1b22a5530e6692ea856d5ce9274a.png)
A.![]() ![]() ![]() |
B.若![]() ![]() ![]() ![]() ![]() |
C.当![]() ![]() ![]() ![]() ![]() |
D.方程![]() ![]() |
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