h

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

rate

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

rate

1/16

0.0163399

0.359055

1/32

0.00441221

1.88882

0.179362

1.00133

1/64

0.00113252

1.96197

0.0883805

1.02108

1/128

0.00028524

1.98926

0.043175

1.03353

1/256

7.088e-005

2.0088

0.0201539

1.09914