\({(Re_{s})}^{\frac{1}{2}}C_{f}=\left(K_{1}\left(1-n\right)f^{{}^{\prime\prime}}\left(0\right)+\frac{f^{\prime}(0)}{\eta+K}\right)\theta^{{}^{\prime}}\left(0\right),\ \ \ Nu_{s}{(Re_{x})}^{-\frac{1}{2}}=-\theta^{{}^{\prime}}\left(0\right),\) (18)