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Re: question

  • To: mathgroup at smc.vnet.net
  • Subject: [mg15614] Re: question
  • From: Harald Giese <giese at dkrz.de>
  • Date: Sat, 30 Jan 1999 04:28:19 -0500 (EST)
  • Organization: Institut fuer Meereskunde, Universitaet Hamburg
  • References: <78pa6k$cn1@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

"Alice M. Dean" wrote:
> ...
> I get a result which is essentially: {{P[t] -> 5.3 E ^(0.031t)}}
> 
> inside two sets of curly brackets.
> 
> I would now like to compute P[10], P[100], etc.  Is there a reasonable
> way to do this?  Thanks, Alice Dean


Alice,

type:
 sol = DSolve[{P'[t]==0.031P[t], P[0]==5.3}, P[t],t]

then:
 sol /. t->100

will give you: 
 {{P[100]->117.64914179164}}


Regards,
Harald

-- 
Harald Giese
Email: giese at dkrz.de
Phone: +49 (0)40 4123 5796; Fax: +49 (0)40 5605724 Institut fuer
Meereskunde der Universitaet Hamburg (Institute of Oceanography of the
University of Hamburg) Troplowitzstrasse 7, D-22529 Hamburg


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