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

1.331 × 10−3

3.408 × 10−5

1.408 × 10−4

0.435 × 10−3

3.025 × 10−4

1.420 × 10−4

0.04

9.034 × 10−3

1.000 × 10−4

9.00 × 10−4

1.512 × 10−3

1.034 × 10−4

2.152 × 10−5

0.06

1.141 × 10−3

1.092 × 10−4

9.092 × 10−5

3.023 × 10−2

0.122 × 10−3

1.102 × 10−5

0.08

3.114 × 10−3

2.843 × 10−4

2.843 × 10−4

4.750 × 10−3

3.421 × 10−5

1.456 × 10−6

0.10

7.081 × 103

0.774 × 10−4

0.075 × 10−4

6.445 × 10−3

6.505 × 10−5

3.345 × 10−6