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Table 2 Comparison of the maximum absolute error of Example 5.1 of the proposed scheme and the result in [3]

From: Solving singularly perturbed fredholm integro-differential equation using exact finite difference method

\( \varepsilon \downarrow \)

N \( \rightarrow \) \( 2^5 \)

\( 2^6 \)

\(2^7 \)

\( 2^8 \)

\( 2^9 \)

\( 2^{10} \)

Proposed scheme

\( 2^{0} \)

4.2307e-06

1.0587e-06

2.6468e-07

6.6170e-08

1.6505e-08

4.0694e-09

\( 2^{-4} \)

2.9647e-05

7.5264e-06

1.8872e-06

4.7238e-07

1.1812e-07

2.9529e-08

\( 2^{-8} \)

1.3865e-05

4.9014e-06

2.2887e-06

7.0094e-07

1.8356e-07

4.6429e-08

\(2^{-12}\)

6.9416e-04

5.9134e-05

4.0396e-06

2.5841e-07

1.6151e-08

2.3062e-08

\( 2^{-16} \)

4.0163e-03

1.2458e-03

1.8212e-04

1.5518e-05

1.0605e-06

6.7831e-08

Result in [3]

\( 2^0 \)

0.00343868

0.00198874

0.00110332

0.00060368

0.00030394

0.00015197

\( 2^{-4} \)

0.01032126

0.00605257

0.00338123

0.00185003

0.00094445

0.00047551

\( 2^{-8} \)

0.01125894

0.00660244

0.00368841

0.0020181

0.00103025

0.00051871

\( 2^{-12} \)

0.011200979

0.00656845

0.00366942

0.00200771

0.00102495

0.00051604

\( 2^{-16}\)

0.0112049

0.00657075

0.00367071

0.00200842

0.00102531

0.00051622