Question $2.[20$ points$]$ The carrier c$($t$)=100$cos$(2\backslash$pi f$\_($c$)$t$)$ is frequency modulated by the signal

m$($t$)=5$cos$(20000\backslash$pi t$),$ where f$\_($c$)=10^(8)$Hz$.$ The peak frequency deviation is $20$ kHz $.$

a$10\%$ of the power of the unmodulated carrier component.

c