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General--Differential equation problem..

  • To: mathgroup at
  • Subject: [mg66284] General--Differential equation problem..
  • From: randomtalk at
  • Date: Sun, 7 May 2006 00:42:46 -0400 (EDT)
  • Sender: owner-wri-mathgroup at

hello, i was trying to solve a set of differential equations needed for a school project.. However, i'm completely new to mathematica 5.0, and i have downloaded trial, here is what i inputed into the software:

DSolve[{x'[s] == Cos[z], y'[s] == Sin[z], z'[s] == 1/r, r == 2}, {x, y, z}, s]

returns this error: DSolve::dvnoarg: The function z appears with no arguments.

Is there anything wrong with what i inputed? The differential equations came from this website:

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