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MathGroup Archive 2005

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Re: is this solvable?

  • To: mathgroup at smc.vnet.net
  • Subject: [mg56607] Re: [mg56585] is this solvable?
  • From: Chris Chiasson <chris.chiasson at gmail.com>
  • Date: Sat, 30 Apr 2005 01:27:16 -0400 (EDT)
  • References: <200504290721.DAA10299@smc.vnet.net>
  • Reply-to: Chris Chiasson <chris.chiasson at gmail.com>
  • Sender: owner-wri-mathgroup at wolfram.com

I don't know if you have enough equations. See this example on SOS math:

http://www.sosmath.com/diffeq/system/linear/eigenvalue/eigenvalue.html

It seems like you know something about the addition of the two
derivatives, but given a point in {a, b} space... you wouldn't have
enough information to calculate the "velocity" of your solution's
"point" in time t.

That's just my guess.


On 4/29/05, ames_kin at yahoo.com <ames_kin at yahoo.com> wrote:
> a'[t] + b'[t]== -p1 a[t] - p2 b[t]
> 
> where {a[0]== a0, b[0]== b0}
> 
> is this solvable in Mathematica? If so, how will I go about doing so?
> 
> let's assume a[0]== a0, and b[0]==b0
> 
> if symbolic solution isn't possible, then intial conditions of
> a[0]== 1, and b[0]==0.5 couild be used...(or any other numbers for that
> matter)
> 
> thanks in advance.
> 
> 


-- 
Chris Chiasson
http://chrischiasson.com
Kettering University
Mechanical Engineering
Graduate Student
1 810 265 3161


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