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Matrix inverse


  • A should be a square matrix, i.e., ndims(A) == 2 and size(A,1) == size(A,2).
  • If A is non-singular, inv(A) gives its matrix inverse.
  • It returns an error if A is singular.
  • It reports a warning, and proceeds to compute the inverse anyway, if the reciprocal of the condition number of A is less than norm(A)*eps (i.e., A nearly singular or badly conditioned).