- #1
binbagsss
- 1,259
- 11
Homework Statement
Attached
Homework Equations
Below
The Attempt at a Solution
To be honest I was going to differentiate one equation to get a 2nd order ODE and plug in the other equation, since to me ##v(0)=0## is not strong enough to do as below, am I completely mis-interpreted?
solution here:
Am I being stupid but I have no idea how we have set ##v(t)=0## for all time, de-coupling the equations trivially, and then solved for ##u(t)## , isn't this effectively claiming this is how ##u## varies with ##t## in general, given simply that ##v(0)=0##, to me this is simply the behaviour at ##t=0##? Or is the idea something like this holds for ## t## small only - if so, isn't this unclear in the question since it doesn't say to find how ##u## varies with ##t## small or anything like that.
Thanks