Figure 6From: An efficient iterative approach for three-dimensional modified anomalous fractional sub-diffusion equations on a large domainThe graphs of the absolute error function of \(u(x,40,40,t)\) for Example 2 via the standard VIM (left side) and the upgraded VIM with \(h=0.18\) as an auxiliary parameter (right side) in the case \((\alpha =\frac{1}{4}, \beta =\frac{1}{2}, \gamma =\frac{3}{4})\)Back to article page