Question

is y(t)=sint + 4cos2πt periodic?

Answer 1

What is the definition of "Periodic"?

Answer 2

Is that \(\cos^{2}(\pi t)\;or\;\cos(2\pi t)\)

Answer 3

Is y(t) = y(t+k) for ANY k?

Answer 4

http://www.wolframalpha.com/input/?i=period+sint+%2B+4cos2%CF%80t+

Answer 5

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