' - - File: XIIIh IVP for first order differential equation: Y '{x} = F{x,y}

F{t,x} =  -2x + Exp[-2(t-6)^2]
to = 0 :  tf = 10 :  xo =1
IVP[F, {to, tf, xo}{1,0.0005}]

' NOTE:
' Size of TOL was necessary to develop a smooth curve. Note Factor = 1.0 - -
'   try 1.05 and in both cases, not the vertices count. Not important here, but in
'   higher-order DEQ, may make a difference not to exceed program plot limits.


