Q.

Which of the following functions represents a simple harmonic oscillation?

A. sinωt-cosωt
B. sinωt+sin2ωt
C. sinωt-sin2ωt
D. sin2 ωt
Answer» A. sinωt-cosωt
Explanation: y=sinωt-cosωt dy/dt=ωcosωt+ωsinωt
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