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D.3.2.8 charpoly

Procedure from library linalg.lib (see linalg_lib).

Usage:
charpoly(A[,v]); A square matrix, v string, name of a variable

Return:
poly, the characteristic polynomial det(E*v-A)
(default: v=name of last variable)

Note:
A must be independent of the variable v. The computation uses det. If printlevel>0, det(E*v-A) is diplayed recursively.

Example:
 


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