Table 4 Comparison of ${\mathit{f}}^{\mathbf{″}}\mathbf{(}\mathbf{0}\mathbf{)}$ obtained by Bachok et al. [23] with the present results for particular values of ${\mathit{K}}_{\mathit{s}}\mathbf{=}\mathit{K}\mathbf{=}\mathit{Sc}\mathbf{=}\mathbf{1}$, ${\mathit{f}}_{\mathit{w}}\mathbf{=}\mathit{M}\mathbf{=}\mathit{\varphi }\mathbf{=}\mathbf{0}$

λ

${\mathit{f}}_{\mathbf{1}}^{\mathbf{\prime }\mathbf{\prime }}\mathbf{(}\mathbf{0}\mathbf{)}$ [23]

${\mathit{f}}_{\mathbf{1}}^{\mathbf{\prime }\mathbf{\prime }}\mathbf{(}\mathbf{0}\mathbf{)}$ (Present)

${\mathit{f}}_{\mathbf{2}}^{\mathbf{\prime }\mathbf{\prime }}\mathbf{(}\mathbf{0}\mathbf{)}$ [23]

${\mathit{f}}_{\mathbf{2}}^{\mathbf{\prime }\mathbf{\prime }}\mathbf{(}\mathbf{0}\mathbf{)}$ (Present)