比如一个函数有一部分以π为�期,其他部分以2π为�期,可以说2π是该函数的一个�期吗? 知乎 Template




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tomski比如一个函数有一部分以π为�期,其他部分以2π为�期,可以说2π是该函数的一个�期吗? 知乎 coloring