Load the matrix used in the solution of a power network problem. Verify it is positive definite, and approximate its condition number. Apply with tol−10 and maxiter Apply preconditioned ...

Load the

matrix

used in the solution of a power network problem.

Verify it is positive definite, and approximate its condition number.

Apply

with tol
⁻¹⁰
and maxiter

Apply preconditioned

with

iterations.

Apply

preconditioning. You will need to experiment with the maximum number of iterations required.