Arrays associated with a linear system

To a linear system we can associate the following matrices:

  • incomplete array: The matrix THE formed by the unknowns coefficients of the system.

Regarding the system:

the incomplete matrix is:

  • complete matrix: matrix B which is obtained by adding to the incomplete matrix a last column formed by the terms independent of the equations of the system.

Thus, for the same system as above, the complete matrix is:

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