Da

Da = 1

Da = 0.1

Da = 0.01

Da = 0.001

$\begin{array}{l}\eta =1/3\\ \xi =2/3\end{array}$

$\frac{\text{d}{u}_1}{\text{d}y}\left(\eta \right)=\frac{\text{d}{u}_2}{\text{d}y}\left(\eta \right)$

0.1569537

0.09790637

−0.01808557

−0.08601249

$\frac{\text{d}{u}_2}{\text{d}y}\left(\xi \right)=\frac{\text{d}{u}_3}{\text{d}y}\left(\xi \right)$

−0.1636852

−0.1433454

−0.0725202

−0.00648

$\begin{array}{l}\eta =1/4\\ \xi =3/4\end{array}$

$\frac{\text{d}{u}_1}{\text{d}y}\left(\eta \right)=\frac{\text{d}{u}_2}{\text{d}y}\left(\eta \right)$

0.2411004

0.1846199

0.05934378

−0.02412919

$\frac{\text{d}{u}_2}{\text{d}y}\left(\xi \right)=\frac{\text{d}{u}_3}{\text{d}y}\left(\xi \right)$

−0.2409034

−0.1826534

−0.051689

−0.0032

$\begin{array}{l}\eta =0.49\\ \xi =0.51\end{array}$

$\frac{\text{d}{u}_1}{\text{d}y}\left(\eta \right)=\frac{\text{d}{u}_2}{\text{d}y}\left(\eta \right)$

−.002095967

−0.07054511

−0.1803686

−0.2219087

$\frac{\text{d}{u}_2}{\text{d}y}\left(\xi \right)=\frac{\text{d}{u}_3}{\text{d}y}\left(\xi \right)$

−0.02130357

−0.08492409

−0.1811111

−0.1886142