h

${\Vert v-v_h\Vert }_{\infty }$

order

${\Vert v-v_h\Vert }_{0,h}$

order

${\Vert v-v_h\Vert }_{1,h}$

order

$\frac{1}{2^4}$

2.110e−02

-

1.492e−02

-

2.241e−01

-

$\frac{1}{2^5}$

5.281e−03

1.998

3.734e−03

1.998

1.157e−01

0.9531

$\frac{1}{2^6}$

1.320e−03

1.999

9.338e−04

1.999

5.883e−02

0.9767

$\frac{1}{2^7}$

3.302e−04

1.999

2.334e−04

1.999

2.965e−02

0.9885

$\frac{1}{2^8}$

8.255e−05

2.000

5.837e−05

2.000

1.488e−02

0.9943