MAT INV

General Forms:

1.      MAT numeric_receiver_array = INV(numeric_array1) [ [ det ] [ ,n ]]

2.      numeric_receiver_array = INV(numeric_array1) [ [ det ] [ ,n ]]

Where:

     det           = a numeric receiver variable which is assigned the value of the
               determinant of the numeric_receiver_array.

     n           = a numeric receiver variable which is assigned the value of the
               normalised determinant of numeric_array1.

The MAT inverse statement assigns the inverse of numeric_array1 to the numeric_receiver_array. The same array can appear on both sides of the matrix. The reciever array is redimensioned to have the same dimensions as the inverted array which must be a square matrix otherwise an error will occur.

Once the inversion is complete the variables det and n if specified will be set to the determinant and the normalised determinant respectively.

The matrix is inverted using the Gauss-Jordan method with maximum pivoting. It must be square and non-singular.

Syntax examples:

MAT abc = INV(xyz),det,ndet
abc() = INV(xyz()),dt1,dt2