Research Article
A Nonstandard Fitted Operator Method for Singularly Perturbed Parabolic Reaction-Diffusion Problems with a Large Time Delay
Table 3
Comparison of absolute maximum errors and rate of convergence
for Example
1.
| | m, n | 32, 8 | 64, 16 | 128, 32 | 256, 64 | | Present method | | 1.3999e − 05 | 8.6123e − 07 | 5.0742e − 08 | 3.1249e − 09 | | 1.3999e − 05 | 8.6123e − 07 | 5.0742e − 08 | 3.1249e − 09 | | 1.3999e − 05 | 8.6123e − 07 | 5.0742e − 08 | 3.1249e − 09 | | 4.0228 | 4.0851 | 4.0213 | | | Singh et al. [12] | | 7.95e − 01 | 2.03e − 01 | 5.12e − 02 | 1.28e − 02 | | 7.95e − 01 | 2.03e − 01 | 5.12e − 02 | 1.28e − 02 | | 7.95e − 01 | 2.03e − 01 | 5.12e − 02 | 1.28e − 02 | | 1.97 | 1.99 | 2.00 | |
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