A graph showing a message and carrier signal for an FM transmission. The signals are given respectively as:

• ${\displaystyle x_{m}(t)=0.65\left[0.2\sin(t)+0.5\cos(2t)+\cos(4.5t)\right]\,}$
• ${\displaystyle x_{c}(t)=A\cos(2\pi f_{c})\,}$

where

• ${\displaystyle A=2\,}$
• ${\displaystyle f_{c}=3\,}$