h

${\Vert u-u_h\Vert }_{\infty }$

order

${\Vert u-u_h\Vert }_{\mathrm{0,}h}$

order

${\Vert u-u_h\Vert }_{\mathrm{1,}h}$

order

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

7.379e−03

-

5.218e−03

-

3.697e−02

-

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

1.751e−03

2.075

1.238e−03

2.075

1.860e−02

0.9912

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

4.319e−04

2.019

3.054e−04

2.019

9.469e−03

0.9740

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

1.076e−04

2.005

7.609e−05

2.005

4.794e−03

0.9820

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

2.688e−05

2.001

1.900e−05

2.001

2.413e−03

0.9898