h

$\Vert {\widehat{e}}_u\Vert$

rate

${\Vert {\widehat{e}}_u\Vert }_{H^1}$

rate

1/16

0.0141677

0.229437

1/32

0.00399717

1.82555

0.115215

0.993773

1/64

0.00103366

1.95121

0.0568472

1.01916

1/128

0.00026067

1.98747

0.0278674

1.02851

1/256

6.509e-005

2.00181

0.0131527

1.08322