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3.8 Pole/Zero Analysis 307<br />

3.8.1 GeneralizedEigensystem<br />

GeneralizedEigensystem[A, B]<br />

Command structure of GeneralizedEigensystem.<br />

computes the eigenvalues and the corresponding left and<br />

right eigenvectors of the matrix pencil A B<br />

GeneralizedEigensytem computes the eigenvalues and the corresponding left and right eigenvectors<br />

of a matrix pencil A B by the QZ algorithm. The function returns a list of lists of the form<br />

{{lambda, v, u, iter}, † † † }, where lambda denotes a finite eigenvalue of A B, v and<br />

u the corresponding left and right eigenvectors, and iter the number of iterations the QZ algorithm<br />

needed to compute lambda.<br />

Note that this function is accessible only if the global Analog Insydes option UseExternals is set to<br />

True and if a native version of the external MathLink module QZ.exe is available for your machine<br />

(see Section 3.13.4).<br />

GeneralizedEigensystem has the following option:<br />

option name<br />

default value<br />

Normalize True whether to normalize the eigenvectors<br />

Option for GeneralizedEigensystem.<br />

Unless you specify Normalize −> False, the eigenvectors are scaled such that v i<br />

⩵ u i<br />

⩵ .<br />

See also: GeneralizedEigenvalues (Section 3.8.2), UseExternals (Section 3.14.7).<br />

Examples<br />

Load Analog Insydes.<br />

Define two square<br />

real-valued matrices.<br />

Compute the eigenvalues<br />

and eigenvectors of A B.<br />

In[1]:=

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