Mathematica 9 is now available
Services & Resources / Wolfram Forums
-----
 /
MathGroup Archive
2006
*January
*February
*March
*April
*May
*June
*July
*August
*September
*October
*November
*December
*Archive Index
*Ask about this page
*Print this page
*Give us feedback
*Sign up for the Wolfram Insider

MathGroup Archive 2006

[Date Index] [Thread Index] [Author Index]

Search the Archive

General--Differential equation problem..

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

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:

In[2]:=
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: http://fy.chalmers.se/LISEBERG/eng/loop_pe.html

Link to the forum page for this post:
http://www.mathematica-users.org/webMathematica/wiki/wiki.jsp?pageName=Special:Forum_ViewTopic&pid=10212#p10212
Posted through http://www.mathematica-users.org [[postId=10212]]



  • Prev by Date: Extract any diagonal from a square matrix...
  • Next by Date: Save to Quicktime during calculations?
  • Previous by thread: Re: Extract any diagonal from a square matrix...
  • Next by thread: Re: General--Differential equation problem..