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+.TH MATINV 3M
+.SH NAME
+matinv
+.SH DESCRIPTION
+subroutine matinv.f
+
+source
+ Bevington, pages 302-303.
+
+purpose
+ invert a symmetric matrix and calculate its determinant
+
+usage
+ call matinv (array, norder, det)
+
+description of parameters
+ array - input matrix which is replaced by its inverse
+ norder - degree of matrix (order of determinant)
+ det - determinant of input matrix
+
+subroutines and function subprograms required
+ none
+
+comments
+ valid for norder up to 10