\[\left(\begin{array}{rr}
0 & 1 \\
0 & 0
\end{array}\right), \left(\begin{array}{rr}
4 & 1 \\
2 & 0
\end{array}\right)\]
RuntimeError: Some eigenvalue does not exist in Rational Field.
\[\left(\begin{array}{r|r}
-5.656854249492380? & 0 \\
\hline
0 & 5.656854249492380?
\end{array}\right), \left(\begin{array}{rr}
1 & 1 \\
-1.207106781186548? & 0.2071067811865476?
\end{array}\right)\] | 
