Linear Algebra and the C Language/a0a1

The Inverse with gj_TP_mR(); (TP)

In linear algebra, an invertible matrix is a square matrix that has an inverse... Wikipedia: Invertible matrix

The function

invgj_mR();

• Random values
• Choose your values

Code study

The function: invgj_mR(double **A, double **invA);

• c00a.c
• The whole algorithm.
• c00b.c

The function: invgj_pivot_mR(double **AID);

• c00c.c
• The function selects the best pivot and puts zero under the pivot.
• c00d.c
• The function puts zero above the pivot.
• c00e.c

The function: sort_c_mR(double **Ab);

• c00f.c
• The function puts the columns in the correct order.
• c00g.c

The function: sort_r_mR(double **Ab);

• c00h.c
• The function puts the rows in the correct order.
• c00i.c

Some applications

Solve: AX = B

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Solve: A|x1|x2| ... |xn| = b1|b2| ... |bn|

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