.Modelica.Math.Matrices.inv

Information

Syntax

invA = Matrices.inv(A);

Description

This function returns the inverse of matrix A, i.e., A*inv(A) = identity(size(A,1)) computed by a LU decomposition with row pivoting. Usually, this function should not be used, because there are nearly always better numerical algorithms as by computing directly the inverse. Example:

Use x = Matrices.solve(A,b) to solve the linear equation A*x = b, instead of computing the solution by x = inv(A)*b, because this is much more efficient and much more reliable.

See also

Interface

function inv
  extends Modelica.Icons.Function;
  input Real A[:, size(A, 1)];
  output Real invA[size(A, 1), size(A, 2)] "Inverse of matrix A";
end inv;