N

2

4

6

8

10

${\Vert u-u_N\Vert }_{L^2\left(\Lambda \right)}$

1.4131e−15

1.4131e−15

1.4131e−15

2.3773e−15

1.0014e−15

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

9.9920e−16

9.9920e−16

0

8.1210e−16

9.9920e−16