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Equation problem

  • To: mathgroup at smc.vnet.net
  • Subject: [mg42378] Equation problem
  • From: "Dan" <gentlemanjack at casino.com>
  • Date: Thu, 3 Jul 2003 06:10:33 -0400 (EDT)
  • Organization: A Customer of Tele2
  • Sender: owner-wri-mathgroup at wolfram.com

I need to solve the system of equations (in Mathematica notation):

r1 == 0.0298
r2 == 0.0335
n == Abs[(r2-r1)/T]
2*Pi*Sum[r1+i*T, {i,0,n}] == 10
T>0

I tried (ignoring T>0) to use NSolve, which didn't work. I guessed the
problem is that the summation limit depends on T which is also a part of the
summand. However, Mathematica succesfully solves the simpler Sum[n, {i, 0,
n}] == 2. What is the essence of the problem? How can I solve it?



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