Figure 3

(a) Numerical solution of Eq. (72) for \(\alpha =1\), (b) 3D surface solution for \(\alpha =\frac{1}{2}\), (c) Non-differentiable surface solution behavior for \(\alpha =\frac{\ln (2)}{\ln (3)}\), (d) Approximate solutions for \(\alpha =1,\frac{1}{2}\) and \(\frac{\ln (2)}{\ln (3)}\), (e) Absolute error \(E_{10}(v(x,t))=|v_{\mathrm{ext}.}(x,t)-v_{\mathrm{appr}.}(x,t)|\), \(\alpha =1\), (f) Absolute error \(E_{20}(v(x,t))=|v_{\mathrm{ext}.}(x,t)-v_{\mathrm{appr}.}(x,t)|\), \(\alpha =1\), (g) Absolute error of the LFHAM \(E_{10}(v(x,t))=|v_{\mathrm{ext}.}(x,t)-v_{\mathrm{appr}.}(x,t)|\) for \(\alpha =\frac{\ln (2)}{\ln (3)}\), (h) Absolute error of the LFHAM \(E_{20}(v(x,t))=|v_{\mathrm{ext}.}(x,t)-v_{\mathrm{appr}.}(x,t)|\) for \(\alpha =\frac{\ln (2)}{\ln (3)}\)