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Table 1 The error estimation between the exact and regularized source functions for \(\alpha \in \{0.1, 0.3, 0.5, 0.7, 0.9\}\) and \(\mathrm{x} \in (0,\pi )\)

From: Recovering the space source term for the fractional-diffusion equation with Caputo–Fabrizio derivative

α

M = N = 50, N(k)=10, n = 5, c = 1, χ = 3/4

ε

0.1

0.01

0.001

0.1

 

0.625292032114638

0.087100745983566

2.43525380437e − 04

0.3

 

0.421470519953221

0.001482709063832

1.27369718370e − 04

0.5

 

0.013836342900140

0.001320217219321

1.44739318526e − 04

0.7

 

0.030298174314198

0.002973010099701

3.39046203147e − 04

0.9

 

0.16883894823ee − 04

0.015674145530483

8.98583008912e − 04