http://mathforum.org/kb List of forum topics en http://mathforum.org/kb/thread.jspa?messageID=7933534&tstart=0#7933534 Thanks Bob,
Thanks for the fast comment
It now solves


On Fri, Dec 7, 2012 at 1:34 AM, Bob Hanlon <hanlonr357@gmail.com>]]> Dec 7, 2012 1:37:41 AM Dec 7, 2012 1:37:41 AM hazem.abdelhafiz@gmail.com 0 http://mathforum.org/kb/thread.jspa?messageID=7933547&tstart=0#7933547 ]]> Dec 7, 2012 1:37:40 AM Dec 7, 2012 1:37:40 AM 1 http://mathforum.org/kb/thread.jspa?messageID=7933545&tstart=0#7933545 too large to be handled.

s = NDSolve[{
ph1''[t] + ph1'[t] +]]> Dec 7, 2012 1:37:40 AM Dec 7, 2012 1:37:40 AM hanlonr357@gmail.com 0 http://mathforum.org/kb/thread.jspa?messageID=7933548&tstart=0#7933548 ]]> Dec 7, 2012 1:37:40 AM Dec 7, 2012 1:37:40 AM 3