h

L 2 error

Order

L error

Order

0.04

6 .9701 × 10 4

8 .9056 × 10 4

0.02

1 .7441 × 10 4

2.00

2 .2432 × 10 4

1.99

0.01

4 .2682 × 10 5

2.03

5 .5016 × 10 5

2.03

0.005

9 .7086 × 10 6

2.14

1 .2371 × 10 5

2.15