Use the change of variables to show that the differential
Chapter 6, Problem 6.1.140(choose chapter or problem)
Use the change of variables to show that the differential equation of the aging spring mx ket x 0, 0, becomes s2 d2x ds2 s dx ds s2x 0. s 2
Unfortunately, we don't have that question answered yet. But you can get it answered in just 5 hours by Logging in or Becoming a subscriber.
Becoming a subscriber
Or look for another answer