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Re: Manipulate problems again

  • To: mathgroup at smc.vnet.net
  • Subject: [mg99128] Re: Manipulate problems again
  • From: dh <dh at metrohm.com>
  • Date: Tue, 28 Apr 2009 04:43:21 -0400 (EDT)
  • References: <gt3f2h$ic4$1@smc.vnet.net>


Hi Sean,

you had a superfluous brace around the variables of Manupulate. I also 

simplified your expression a bit:

========================================

ClearAll["Global`*"]



Manipulate[{anpsol =

    NDSolve[{a''[t] == -k1 k2 a[t] - k1 a'[t] + k3 a'[t],

      a[0] == k2/k1, a'[0] == 0}, {a[t], a'[t]}, {t, 0, 20}];

   Print[anpsol];

   Plot[Evaluate[sol], {t, 0, 20}, PlotRange -> All,

    FrameLabel -> {t, a and a'}, AspectRatio -> 1/GoldenRatio],

   ParametricPlot[Evaluate[sol], {t, 0, 20}, PlotRange -> All,

    FrameLabel -> {a, a'}, AspectRatio -> 1/GoldenRatio]}, {k1, 0.1,

   10}, {k2, 0.1, 10}, {k3, 0.11, 10}, {b0, 0.1, 10}]

=========================================

Daniel







sean_incali at yahoo.com wrote:

> Hello group,

> 

> I'm having problems with this...

> 

> ClearAll["Global`*"]

> 

> Manipulate[

> {

> anpsol := NDSolve[{a''[t] == -k1 k2 a[t] - k1 a'[t] + k3 a'[t], a[0]

> == k2/k1, a'[0] == 0 }, {a[t], a'[t]}, {t, 0, 20}];

> 

> Plot[Evaluate[{a[t], a'[t]} /. anpsol], {t, 0, 20}, PlotRange -> All,

> FrameLabel -> {t, a and a'}, AspectRatio -> 1/GoldenRatio],

> 

> ParametricPlot[Evaluate[{a[t], a'[t]} /. anpsol], {t, 0, 20},

> PlotRange -> All, FrameLabel -> {a, a'},  AspectRatio -> 1/

> GoldenRatio]

> },

> {{k1, 0.1, 10}, {k2, 0.1, 10}, {k3,0.11, 10}, {b0, 0.1, 10}}]

> 

> 

> Thanks for any insight.

> 

> Sean

> 

> 




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