1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Fourier Series Representation of Signals (Proof)

  1. Jan 26, 2013 #1
    Hi guys,

    I was studying the proof below and just can't figure out the the first highlighted step leads to the second and I was wondering if you guys can help me to fill that in. (:


    Thank you so much for your help in advance guys!
  2. jcsd
  3. Jan 26, 2013 #2


    User Avatar
    Gold Member

    It follows from:

    cos(a+b)= cos(a)cos(b)-sin(a)sin(b)
  4. Jan 26, 2013 #3
    Thank you so much! :D
  5. Jan 26, 2013 #4
    -- it's okay, I for it. Really stupid question. hahaha ---
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Similar Discussions: Fourier Series Representation of Signals (Proof)
  1. Fourier series (Replies: 11)

  2. Fourier series (Replies: 1)

  3. Fourier Series (Replies: 4)