Table 14 Example  7 : Maximum absolute error at \(\pmb{\varepsilon = 1}\) , \(\pmb{\alpha_{1} = \beta_{1} = - 2}\) , \(\pmb{\alpha_{2} = \beta_{2} = 1}\) , \(\pmb{h = 2\pi /100}\) , \(\pmb{k = 0.01}\)

From: High-accuracy quasi-variable mesh method for the system of 1D quasi-linear parabolic partial differential equations based on off-step spline in compression approximations