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ridiculous results with DSolve

  • To: mathgroup at
  • Subject: [mg33363] ridiculous results with DSolve
  • From: "Diego Catalano Ferraioli" <diego_catalano_ferraioli at>
  • Date: Sun, 17 Mar 2002 05:33:20 -0500 (EST)
  • Reply-to: "Diego Catalano Ferraioli" <dcatalano at>
  • Sender: owner-wri-mathgroup at

Hi all !
Actually I'm interested in implementation of algoritms based on the Lie 
theory of differential equations.
I was searching for a suitable language for an efficient implementation 
of these algoritms when I discovered that (for example):
 if you try to solve with Mathematica the trivial PDE 


   then a Dump occurs, but if you try to solve the equivalent equation


  then Mathematica gives the wrong solution

C[1][x]+C[2][y] .

This result is ridiculous !!!!
How it is possible?


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