An Accurate Spectral Galerkin Method for Solving Multiterm Fractional Differential Equations

Table 3

Maximum pointwise errors using SGJG method for 𝑁=8,16,24.

𝑁	𝛼	𝛽	SGJG	𝛼	𝛽	SGJG
8	0	0	6.991⋅10^−3	0	2	5.689⋅10^−10
16			3.296⋅10^−4			5.359⋅10^−13
24			4.737⋅10^−5			6.394⋅10^−14
8	1	1	2.715⋅10^−5	2	1	6.091⋅10^−5
16			3.009⋅10^−7			4.465⋅10^−7
24			1.848⋅10^−8			2.407⋅10^−8