N | Trapezoidal error | Rate | Richardson’s extrap. | Rate |
8 | −0.0140244567175 | 0.0001333996544001792 | ||
16 | −0.0034999397183 | 4.00705 | 8.232614749248413e−06 | 16.20380 |
32 | −0.00087460023761 | 4.00175 | 5.129226172684298e−07 | 16.05040 |
64 | −0.000218626035026 | 4.00043 | 3.203250420469317e−08 | 16.01256 |
128 | −5.4655007526e−05 | 4.00010 | 2.0016397428435084e−09 | 16.00313 |