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OpenStudy (anonymous):
How do you identify a periodical function? I need to show work, how would i do it?
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OpenStudy (a_clan):
They have T , a time period after which values starts repeating.
OpenStudy (anonymous):
Usually trigonometric functions, which repeat over intervals of length 2π.
OpenStudy (anonymous):
Example Sin(x+2pi) = Sin x
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