The equation of motion of a particle is \( x=a \cos (\alpha t)^{2} \). The motion is: a. Periodi...

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The equation of motion of a particle is \( x=a \cos (\alpha t)^{2} \). The motion is:
a. Periodic but not oscillatory
b. Periodic and oscillatory
c. Oscillatory but not periodic
d. Neither periodic nor oscillatory
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