mesh

${\Vert u-u_h\Vert }_{L^2\left({\Omega }_1\right)}$

ratio $\left(L^2\left({\Omega }_1\right)\right)$

${\Vert u-u_h\Vert }_{L^{\infty }\left({\Omega }_1\right)}$

ratio $\left(L^{\infty }\left({\Omega }_1\right)\right)$

h

5.20189E-1

5.65939E-1

h/2

2.26124E-1

2.30046

2.46121E-1

2.29943

h/4

8.49490E-2

2.66189

9.24893E-2

2.66108

h/8

2.26970E-2

3.74275

2.47190E-2

3.74160