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Mathematics 19 Online
OpenStudy (anonymous):

How do you identify a periodical function? I need to show work, how would i do it?

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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