5.
Does coswt + sin20wt + cos4wt represent periodic motion? If yes, then find the period (w is any
positive constant).
Hint : (Each term represents a periodic function with different angular frequency. Find the
smallest interval of time after which the sum of three terms repeats).
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Answer:
hvvbc nx bc
rfjfnhdjv
Explanation:
vfxmcgmdg h
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