Figure 2From: Bivariate Chebyshev polynomials of the fifth kind for variable-order time-fractional partial integro-differential equations with weakly singular kernel3D plots of absolute error functions for (a) \(\mathfrak{h}(t)=t\), (b) \(\mathfrak{h}(t)=t^{2}+1\), (c) \(\mathfrak{h}(t)=\cos (t)\), (d) \(\mathfrak{h}(t)=\sin (t)\), \(\sigma (x,t)=2-0.2e^{-xt}\), and \(N=5\) for Example 6.2Back to article page