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D.15.13.14 errormap

Procedure from library finitediff.lib (see finitediff_lib).

Usage:
errormap(f); f of type poly

Return:
type poly; performs the fouriertransformation of a single polynomial

Example:
 
LIB "finitediff.lib";
list D="Ux","Ut","U";
list P="a";
list V="t","x";
setinitials(V,D,P);
scheme(u(Ut)+a*u(Ux),central1st(Ux,U,x),backward(Ut,U,t));
==> (2*dx)*x
errormap(_);
==> (2*dx)*i*sx+(2*dx)*cx