Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Help with text book (vibration)

  1. Mar 9, 2015 #1

    I am studying vibration, came across this in a textbook and can't see the steps taken to substitute e.q 3.5 into 3.3. There is a second derivative x so where does this go, as there is no s^2 either and I can't see how cos was eliminated


    Attached Files:

  2. jcsd
  3. Mar 9, 2015 #2
    ##cos^{\prime\prime} (y)=- \cos(y)##
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Similar Discussions: Help with text book (vibration)
  1. Texts for Vibration (Replies: 4)

  2. Book about vibrations (Replies: 2)