Eigenvalues, any suggestions?

• To: mathgroup at smc.vnet.net
• Subject: [mg43615] Eigenvalues, any suggestions?
• From: ancow65 at yahoo.com (AC)
• Date: Tue, 23 Sep 2003 04:02:30 -0400 (EDT)
• Sender: owner-wri-mathgroup at wolfram.com

```In[1]:=
data={XX\[Rule]100.,YY\[Rule]100.,ZZ\[Rule]100.,
XY\[Rule]0.,XZ\[Rule]0.,YZ\[Rule]0.};

In[2]:=
Eigenvalues[{{XX,XY,XZ},{XY,YY,YZ},{XZ,YZ,ZZ}}]/.data

\!\(Power::"infy" \(\(:\)\(\ \)\) "
Infinite expression \!\(1\/0.`\^\(1/3\)\) encountered."\)

\!\(\*
RowBox[{\(&#8734;::"indet"\), \(\(:\)\(\ \)\), "\<\"Indeterminate
expression \\!\\(0.`\\\\
2\\^\\(1/3\\)\\\\ \\*InterpretationBox[\\\"ComplexInfinity\\\", \
DirectedInfinity[]]\\) encountered.\"\>"}]\)

\!\(Power::"infy" \(\(:\)\(\ \)\) "
Infinite expression \!\(1\/0.`\^\(1/3\)\) encountered."\)

\!\(\*
RowBox[{\(&#8734;::"indet"\), \(\(:\)\(\ \)\), "\<\"Indeterminate
expression \\!\\(\\(0.`\\\\ \\(\\((\\(\[LeftSkeleton] 1 \
\[RightSkeleton]\\))\\)\\)\\\\ \\*InterpretationBox[\\\"ComplexInfinity\\\", \
DirectedInfinity[]]\\)\\/2\\^\\(2/3\\)\\) encountered.\"\>"}]\)

\!\(Power::"infy" \(\(:\)\(\ \)\) "
Infinite expression \!\(1\/0.`\^\(1/3\)\) encountered."\)

General::stop: Further output of Power::infy will be suppressed during this \
calculation.

\!\(\*
RowBox[{\(&#8734;::"indet"\), \(\(:\)\(\ \)\), "\<\"Indeterminate
expression \\!\\(\\(0.`\\\\ \\(\\((\\(\[LeftSkeleton] 1 \
\[RightSkeleton]\\))\\)\\)\\\\ \\*InterpretationBox[\\\"ComplexInfinity\\\", \
DirectedInfinity[]]\\)\\/2\\^\\(2/3\\)\\) encountered.\"\>"}]\)

General::stop: Further output of &#8734;::indet will be suppressed during this \
calculation.

Out[2]=
{Indeterminate,Indeterminate,Indeterminate}

In[3]:=
\$Version

Out[3]=
4.2 for Microsoft Windows (June 5, 2002)

```

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