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Contents

Index

• Getting Started

• User's Guide

• Desktop Tools and Development Environment

• Data Import and Export

• Mathematics

• Arrays and Matrices

• Linear Algebra

• Matrix Analysis

• Linear Equations

• Eigenvalues and Singular Values

• Matrix Logarithms and Exponentials

• Factorization

• Elementary Math

• Polynomials

• Interpolation and Computational Geometry

• Cartesian Coordinate System Conversion

• Nonlinear Numerical Methods

• Special Functions

• Sparse Matrices

• Math Constants

• Data Analysis

• Programming and Data Types

• Object-Oriented Programming

• 3-D Visualization

• GUI Development

• External Interfaces

• Release Notes

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

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