Hello,

In general, the period would be the least common multiple of the two periods you have been given.

For example : period pi/2 and period pi/3.

2*pi/2=pi

3*pi/2=3pi/2

4*pi/2=2pi

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2*pi/3=2pi/3

3*pi/3=pi

4*pi/3=4pi/3

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Period is pi

If you give an example, I think I'll be able to explain better