Re: Solving differential equations with parameters

*To*: mathgroup at smc.vnet.net*Subject*: [mg79822] Re: Solving differential equations with parameters*From*: Ivan <darknails at gmail.com>*Date*: Sun, 5 Aug 2007 04:59:30 -0400 (EDT)*References*: <f91j5e$677$1@smc.vnet.net>

On Aug 4, 12:07 pm, Ivan <darkna... at gmail.com> wrote: > Hi, I am trying to solve the differential equations like > > y'[x]= - Sin[ p*x + y[x] ] > > where p is a parameter. Now I want to solve the equation with respect > to x for a range of values of p, instead for just a single p. > What is the best way to do it? I now have a way to do it but there is another problem.. I use the Table command (I change the function for the sake of demonstration) sol = NDSolve[{y'[x]==1/2y[x],y[0.01]==0.1}, y, {x, 0.01,1}]; g=Table[ {y[i*0.01]/.sol}, {i,100} ]; ListPlot[g]; The error message is gptn: Coordindate .. in ... is not a floating- point number. The problem seems to be that y[x]/.sol generate not a "normal" number, instead, the number is is a brace {...}. Can anyone help me?