Total mechanical energy will never change so $T^{\prime}=\infty$
$\therefore \frac{T^{\prime}}{T}=\infty$

$\mathrm{y}=\mathrm{A}_{0}+\mathrm{A} \sin \omega \mathrm{t}+\mathrm{B} \cos \omega \mathrm{t}$
Then the amplitude of its oscillation is given by
