Re: Problem in Evaluate/Manipulate

*To*: mathgroup at smc.vnet.net*Subject*: [mg88650] Re: Problem in Evaluate/Manipulate*From*: wiso <giurrero at gmail.com>*Date*: Sun, 11 May 2008 15:15:05 -0400 (EDT)*References*: <g03v2l$bno$1@smc.vnet.net>

On 10 Mag, 12:57, wiso <giurr... at gmail.com> wrote: > I have a problem with this code: > > Solution =DSolve[{x^\[Prime][t]==a x[t]+b y[t],y^\[Prime][t]==c x[t]+d > y[t],x[0]==x0,y[0]==-10},{x[t],y[t]},t]; > > Manipulate[ > Solutions = Evaluate [Table[{x[t],y[t]}/.Solution[[1]], > {x0,-10,10,10}]] > ,{a,-1,1},{b,-1,1},{c,-1,1},{d,-1,1}] > > I want to solve only one time the PDE, then I placed it outside the > Manipulate. The code doesn't evaluate the solution with the dynamic > values. now the problem is to plot with ParametricPlot. Inside the manipulate I do: Evaluate[Solutions = [Table[{x[t],y[t]}/.Solution[[1]], {x0,-10,10,10}]]]; ParametricPlot[Solutions,{t,0,10}] but it doesn't work.