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MathGroup Archive 2006

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Re: General--Differential equation problem..

  • To: mathgroup at smc.vnet.net
  • Subject: [mg66291] Re: General--Differential equation problem..
  • From: "Chris Chiasson" <chris.chiasson at gmail.com>
  • Date: Mon, 8 May 2006 00:46:12 -0400 (EDT)
  • References: <e3jttb$94n$1@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

yea, in the right hand sides of the first two equations, z appears
without an argument, which i guess should be s

try:In[2]:=
DSolve[Eliminate[
   {Derivative[1][x][s] == Cos[z[s]],
    Derivative[1][y][s] == Sin[z[s]],
    Derivative[1][z][s] == 1/r, 
    r == 2}, r], {x, y, z}, s]


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