N

E Chebyshev

E Collocation [2]

E Galerkin [1]

6

4.7455E-04

0.24E-02

0.60E-02

8

8.7264E-06

0.37E-04

0.84E-04

10

8.7156E-08

0.32E-06

0.29E-06

14

2.3566E-12

0.73E-11

0.31E-09

16

8.2138E-15

0.21E-13

0.29E-09