1*c4762a1bSJed BrownMatrix is symmetric (tolerance 0.) 2*c4762a1bSJed BrownMatrix is symmetric (tolerance 0.) 3*c4762a1bSJed Brownerrors on 5 x 5 grid: av |u-uexact| = 4.531e-02, |u-uexact|_inf = 1.635e-01 4