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Table 2 Comparison of the residual errors by using proposed method at different N for x values for example 2

From: Spectral Tau method for solving general fractional order differential equations with linear functional argument

x e 10 e 8 e 6
0 − 8.88 × 10−16 − 3.88 × 10−14 − 5.34 × 10−13
0.2 − 3.93 × 10−16 − 1.80 × 10−14 − 2.48 × 10−13
0.4 2.15 × 10−16 7.00 × 10−15 9.65 × 10−14
0.6 9.00 × 10−16 3.49 × 10−14 4.80 × 10−13
0.8 1.64 × 10−15 6.51 × 10−14 8.95 × 10−14
1 1.33 × 10−13 9.72 × 10−14 2.44 × 10−15