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DSBEVD Example

To find all the eigenvalues and eigenvectors of the symmetric band matrix

A = $\displaystyle \left(\vphantom{ \begin{array}{rrrrr} 1 & 2 & 3 & 0 & 0 \\ 2... ...3 & 4 & 5 \\ 0 & 4 & 4 & 4 & 5 \\ 0 & 0 & 5 & 5 & 5 \end{array} }\right.$$\displaystyle \begin{array}{rrrrr} 1 & 2 & 3 & 0 & 0 \\ 2 & 2 & 3 & 4 & 0 \... ... 3 & 3 & 3 & 4 & 5 \\ 0 & 4 & 4 & 4 & 5 \\ 0 & 0 & 5 & 5 & 5 \end{array}$$\displaystyle \left.\vphantom{ \begin{array}{rrrrr} 1 & 2 & 3 & 0 & 0 \\ 2... ...3 & 4 & 5 \\ 0 & 4 & 4 & 4 & 5 \\ 0 & 0 & 5 & 5 & 5 \end{array} }\right)$,

The example program for DSBEV illustrates the computation of error bounds for the eigenvalues and eigenvectors..

Example program
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Example results