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 >