h

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

rate

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

rate

1/16

0.0159265

0.282201

1/32

0.00442041

1.84918

0.141806

0.992805

1/64

0.0011382

1.95743

0.0700273

1.01793

1/128

0.00028670

1.98912

0.0343081

1.02937

1/256

7.148e-005

2.00387

0.0161321

1.08861