Research Article

Comparative Study on Numerical Methods for Singularly Perturbed Advanced-Delay Differential Equations

Table 2

Computed rate of convergence and maximum errors for Example 2.

Number of mesh points 3N
1632641282565121024

Finite difference method
5.5384e − 032.5272e − 031.1887e − 035.6672e − 042.7241e − 041.3205e − 046.4844e − 05
5.8841e − 032.7585e − 031.3350e − 036.5461e − 043.2299e − 041.6003e − 047.9627e − 05
5.9911e − 032.8296e − 031.3798e − 036.8149e − 043.3841e − 041.6851e − 048.4085e − 05
6.0248e − 032.8519e − 031.3939e − 036.8989e − 043.4321e − 041.7116e − 048.5469e − 05
6.0354e − 032.8590e − 031.3983e − 036.9253e − 043.4473e − 041.7199e − 048.5904e − 05
6.0387e − 032.8612e − 031.3997e − 036.9337e − 043.4521e − 041.7225e − 048.6041e − 05
6.0398e − 032.8619e − 031.4001e − 036.9363e − 043.4536e − 041.7233e − 048.6085e − 05
6.0401e − 032.8621e − 031.4003e − 036.9371e − 043.4541e − 041.7236e − 048.6098e − 05
6.0401e − 032.8621e − 031.4003e − 036.9371e − 043.4541e − 041.7236e − 048.6098e − 05
1.0774e + 001.0313e + 001.0133e + 001.0060e + 001.0028e + 001.0013e + 00

Hybrid difference method
2.8953e − 021.1470e − 023.9972e − 031.4195e − 034.4816e − 041.3262e − 043.963906e − 05
2.8954e − 021.1483e − 024.0105e − 031.4282e − 034.5308e − 041.3799e − 044.255447e − 05
2.8954e − 021.1484e − 024.0119e − 031.4291e − 034.5358e − 041.3871e − 044.303554e − 05
2.8954e − 021.1485e − 024.0120e − 031.4292e − 034.5363e − 041.3879e − 044.308411e − 05
2.8954e − 021.1485e − 024.0120e − 031.4292e − 034.5364e − 041.3879e − 044.308899e − 05
2.8954e − 021.1485e − 024.0120e − 031.4292e − 034.5364e − 041.3879e − 044.308959e − 05
2.8954e − 021.1485e − 024.0120e − 031.4292e − 034.5363e − 041.3880e − 044.309005e − 05
2.8954e − 021.1485e − 024.0121e − 031.4292e − 034.5358e − 041.3882e − 044.309514e − 05
2.8954e − 021.1485e − 024.0121e − 031.4292e − 034.5364e − 041.3882e − 044.309514e − 05
1.3340e + 001.5173e + 001.4891e + 001.6556e + 001.7082e + 001.6876e + 00