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The displacement \( y \) of a particle executing periodic motion is given by \( y=4 \cos ^{2}(t / 2) \sin (1000 t) \). This expression may
\( \mathrm{P} \) be considered to be a result of the superposition of

W independent harmonic motions
[IIT 1992; AMU (Engg.) 2009]
(a) Two
(b) Three
(c) Four
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