定义在R上的函数既是奇函数又是周期函数。若的最小正周期是，且

定义在R上的函数既是奇函数又是周期函数。若的最小正周期是，且当

时，，则的值为（）

A． B． C． D．

答案

D 提示：

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定义在R上的函数既是奇函数又是周期函数。若的最小正周期是，且

答案

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