不一定.
f(x)=0 是周期函数
f(x)=(x-a)² 不是周期函数
函数f(x)以直线x=a为对称轴且是偶函数,则它是周期函数吗?
函数f(x)以直线x=a为对称轴且是偶函数,则它是周期函数吗?
数学人气:505 ℃时间:2019-08-19 02:51:20
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