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MathGroup Archive 2004

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Re: Solution[[1,1,2]] Brackets

  • To: mathgroup at
  • Subject: [mg46302] Re: Solution[[1,1,2]] Brackets
  • From: "alan b" <alan4100 at>
  • Date: Fri, 13 Feb 2004 21:57:21 -0500 (EST)
  • References: <c0hhi1$let$>
  • Sender: owner-wri-mathgroup at

Please now ignore  my posting  re: solution [[1,1,2]].
It is now solved, but took quite amount of time to figure it out.
It is a nested list.  It is important to know how to extract each element
inside the double brackets to solve work samples, But
 we can use copy/paste method, instead.

"alan b" <alan4100 at> wrote in message
news:c0hhi1$let$1 at
> Let me know if it is appropriate for posting.
> I have been trying to figure out what is inside the solution[1,1,2]. For
> problem below.
> For example,
> solution=DSolve[{n'[t]==kn[t], n[1]=500}, n[t],t]
> population[t_]=solution[[1,1,2]]
> I gather that the first item of the solution[[1,1,2]] is for the first and
> only curly item:{n't[t]==kn[t],n[1]=500}.
> I assume the second item of solution[[1,1,2] is the first subitem of the
> first curly bracket. The third item of solution [[1,1,2]] which is two
> suppose to be for 2nd item of the first curly brackets. But it appears to
> not.
> Is there a way for me to see the contents visibly of the solution[[1,1,2]]
> each item at a time.
> -- 
> alan

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