Quelques problemes de Poisson a une dimension d espace 

Implementation avec le logiciel  libre Octave 
[Copyright 2005 John W. Eaton, voir //www.octave.org/]
dans la version 6.4.0

                        Francois Dubois, fevrier-mars 2025 
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        pb de Dirichlet pour le Laplacien 
        differences finies et volumes finis  a trois points
	condition limite de Dirichlet 

dd3.m   solution exacte = x (1-x) (1/2-x)  
        explicitation de l ordre de convergence

dd4.m   solution exacte = x (1-x) (1/3-x) (2/3 - x)   

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        pb de Dirichlet-Neumann pour le Laplacien a 1D  
        differences finies, volumes finis, elements finis    
	condition limite de Dirichlet - Neumann 

dn3.m   solution exacte = x (1-x) (1/2-x)  
        calcul de l ordre de convergence  
  
dn4.m   solution exacte = x (1-x) (1/3-x) (2/3 - x)  

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