Given the frequency modulated $($FM$)$ signal:

u$($t$)=10$cos$(2$fct$+10$sin$(2000$t$)),$u$($t$)=10\backslash$cos$\backslash$left$(2\backslash$pi f$\_$c t $+10\backslash$sin$(2000\backslash$pi t$)\backslash$right$),$u$($t$)=10$cos$(2$fc$$t$+10$sin$(2000$t$)),$

where the carrier frequency fc$=10$MHzf$\_$c $=10\backslash ,\backslash$text$\{$MHz$\}$fc$=10$MHz