DSTEV Example

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

A = $$\left(\vphantom{ \begin{array}{rrrr} 1 & 1 & 0 & 0 \\ 1 & 4 & 2 & 0 \\ 0 & 2 & 9 & 3 \\ 0 & 0 & 3 & 16 \end{array} }\right.$$$$\begin{array}{rrrr} 1 & 1 & 0 & 0 \\ 1 & 4 & 2 & 0 \\ 0 & 2 & 9 & 3 \\ 0 & 0 & 3 & 16 \end{array}$$$$\left.\vphantom{ \begin{array}{rrrr} 1 & 1 & 0 & 0 \\ 1 & 4 & 2 & 0 \\ 0 & 2 & 9 & 3 \\ 0 & 0 & 3 & 16 \end{array} }\right)$$,

together with approximate error bounds for the computed eigenvalues and eigenvectors.

Example program
Example data
Example results