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Mathematics 9 Online
OpenStudy (anonymous):

The sum of two periodic functions are as I understand it often but not always periodic given the example sin(x)+sin(pi*x) isn't periodic. If I add two periodic functions what is the criterion for the relation between their individual fundamental periods in order for the sum of the two beeing periodic. That it is a real number / integer?

OpenStudy (anonymous):

rational number*

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