D.3.2.2 inverse_B
.................
Procedure from library linalg.lib (see linalg_lib).

Usage:
inverse_B(A); A = square matrix

Return:
list Inv with

- Inv[1] = matrix I and

- Inv[2] = poly p

such that I*A = unitmat(n)*p;

Note:
p=1 if 1/det(A) is computable and p=det(A) if not;

the computation uses busadj.

Example:
LIB "linalg.lib";
ring r=0,(x,y),lp;
matrix A[3][3]=x,y,1,1,x2,y,x,6,0;
print(A);
list Inv=inverse_B(A);
print(Inv[1]);
print(Inv[2]);
print(Inv[1]*A);
See also:
inverse;
inverse_L.


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&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; User manual for <a href="http://www.singular.uni-kl.de/"><i>Singular</i></a> version 2-0-4, October 2002,
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