An Initial Amplitude K, Damping Constant C, and Frequency F $y = k \mathcal { e } ^ { - c t } \cos \omega t$

Essay

An initial amplitude k, damping constant c, and frequency f are given.
a.) Find a function of the form $y = k \mathcal { e } ^ { - c t } \cos \omega t$ that models damped harmonic motion.
b.) Graph the function. $k = 15 , c = 0.25 , f = 0.6$