t

ADM Relative Error

FEM Relative Error

Four terms

Five terms

Six terms

50

100

150

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.02

0.453 × 10−3

1.123 × 10−4

1.013 × 10−4

0.234 × 10−3

3.325 × 10−4

1.120 × 10−4

0.04

1.987 × 10−4

1.347 × 10−4

0.047 × 10−4

1.126 × 10−3

1.034 × 10−4

2.613 × 10−5

0.06

2.798 × 10−4

0.340 × 10−4

0.434 × 10−5

2.023 × 10−2

1.122 × 10−2

1.106 × 10−5

0.08

1.001 × 10−5

0.150 × 10−5

0.504 × 10−6

4.750 × 10−3

2.322 × 10−4

1.457 × 10−6

0.10

1.338 × 10−5

2.243 × 10−5

1.243 × 10−5

6.445 × 10−3

7.805 × 10−5

3.345 × 10−6