08 Jul '06 08:23>1 edit
Originally posted by PBE6Allan Curry's solution and Tristan Simbulan's solutions are rather lengthy. Second order derivatives are involved indeed.
Alan Curry --> http://mathproblems.info/group2.html (see problem #30)
However they give the same result.. as given by Irodov's method.
Surprisingly I.E.Irodov's solution is deceptively simple, elegant and short. It gives the answer in 3 lines without having to do any integration...No differential equation.. no second order derivatives....Only physics ... And lo .... The result appears almost magically from the air...