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D.7.2.2 derivate

Procedure from library ainvar.lib (see ainvar_lib).

Usage:
derivate(m,id); m matrix, id poly/vector/ideal

Assume:
m is an nx1 matrix, where n = number of variables of the basering

Return:
poly/vector/ideal (same type as input), result of applying the vector field by the matrix m componentwise to id;

Note:
the vector field is m[1,1]*d/dx(1) +...+ m[1,n]*d/dx(n)

Example:
 


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