MATLAB Function Reference

condeig

Condition number with respect to eigenvalues

Syntax

• c = condeig(A)
  [V,D,s] = condeig(A)
  

Description

c = condeig(A) returns a vector of condition numbers for the eigenvalues of A. These condition numbers are the reciprocals of the cosines of the angles between the left and right eigenvectors.

[V,D,s] = condeig(A) is equivalent to

• [V,D] = eig(A);
  s = condeig(A);
  

Large condition numbers imply that A is near a matrix with multiple eigenvalues.

See Also

balance, cond, eig

cond

condest