MATLAB provides various solvers for large, sparse problems. The MATLAB function gmres implements the algorithm. Look it up using the help system and apply it to the nonsymmetric matrix DK01R from...

MATLAB provides various solvers for large, sparse problems.

The MATLAB function gmres implements the

algorithm. Look it up using the help system and apply it to the nonsymmetric matrix DK01R from the software distribution, using the right-hand side b_DK01R. You will need to precondition the matrix using a drop tolerance with the statement

The MATLAB function minres implements the MINRES algorithm. Use it with the matrix bcsstm10 from the software distribution with

^T

₀

Use sufficiently many iterations so it succeeds with an error tolerance of

⁻⁶

The MATLAB function symmlq is a general sparse symmetric matrix solver based upon solving a symmetric tridiagonal system. Use it with the matrix bcsstm10 from the software distribution with

^T


₀

Use sufficiently many iterations so it succeeds with an error tolerance of

⁻⁶