Which of the following expression does not represent simple harmonic m

1.	Which of the following expression does not represent simple harmonic motion?
Answer» `x=Acosomega+Bsinomega` `x=Acos(omegat+alpha)` `x=Bsin(omegat+B)` `x=Asinomegatcos^(2)omegat` Solution :Simple harmonic MOTION is represented by a sine function or a COSINE function or a LINEAR COMBINATION of both, hence, option (a), (b) and (c) represent simple harmonic motion while option (d) is a product of the two functions (sine and cosine) does not represent a simple harmonic motion.

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