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MathGroup Archive 2005

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Re: programming in mathematica

  • To: mathgroup at smc.vnet.net
  • Subject: [mg53802] Re: programming in mathematica
  • From: "Jens-Peer Kuska" <kuska at informatik.uni-leipzig.de>
  • Date: Fri, 28 Jan 2005 02:43:46 -0500 (EST)
  • Organization: Uni Leipzig
  • References: <ctaipg$f6k$1@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

Hi,

a) SetDirectory[], Import[] or a J/Link program may help you
b) DSolve[x'[t] == Const1*Exp[Const1*t] + (Const2 + Const3)*x[t], x[t], t]
c) you must use NMinimize[] to add constrains to the paramters

Regards
  Jens


"Paawel" <fonfastik at interia.pl> schrieb im Newsbeitrag 
news:ctaipg$f6k$1 at smc.vnet.net...
> hello
>
> i want make a simple program in Mathematica which would consist of
> several commends: setdirectory, import file (ask for its name??),
> operations on provided data
> how can i do it?
>
> another thing is how to make Mathematice solve such equation:
> dx/dt=Const1*Exp[Const1*t] + (Const2 + Const3)*x
> and i want to write the equation in form as similar to above as
> possible (i mean i dont want to simplify it on my own)
>
> And the last thing - how to set min and max for the specified
> parameters in NonlinearFit?
>
> please help me if can
> thanks
> Pawel
> 



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