1. Using compute the Arnoldi decomposition for the matrix 2. Using compute the Lanczos decomposition for the symmetric matrix 3. Load the matrix Verify it is symmetric but not positive definite,...

1.

Using
compute the Arnoldi decomposition for the matrix

2.

Using

compute the Lanczos decomposition for the symmetric matrix

3.

Load the
matrix

Verify it is symmetric but not positive definite, and approximate its condition number.

Apply minresb with tol

⁻⁶

niter

and

Time each execution, and comment on the result