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Linear Algebra
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OpenStudy (anonymous):
how to find weather a funtion is periodic or not
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OpenStudy (anonymous):
cos3x-sen7x=cos(3x+T)-sin we know that both cosine and sine period happens to be 2(pie)..... can't do the symbol but I'm sure you know what it is then you try to plug in 2(pie) inside of the given function and you'll see you'll have the very same value.
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