Figure 3From: Homotopy-Sumudu transforms for solving system of fractional partial differential equationsResidual error for Example 2 using 20th-order of approximation with \(\alpha =0.9\) and \(\beta =0.8\). (a) for resdual error of \(u(x,t)\) and (b) for resdual error of \(v(x,t)\)Back to article page