- #1

tai man

- 6

- 0

## Homework Statement

Consider the frequency-modulated (FM) signa A(t)=A

_{0}sin[2πf

_{c}t+Δfsin(2πf

_{m}t)/f

_{m}] , where fc = 3.5 kHz, fm = 88.1 MHz. What is the bandwidth of the signal? [Note: You may take sin≅ and cos≅1 for x (in radian) << 1.]

## Homework Equations

A(t)=A

_{0}sin[2πf

_{c}t+Δfsin(2πf

_{m}t)/f

_{m}]

## The Attempt at a Solution

for finding bandwidth, isn't it (fc+fm)-(fc-fm)?