Da

Da = 1

Da = 0.1

Da = 0.01

Da = 0.001

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

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

0.1538176

0.07977407

−0.04941739

−0.1152168

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

−0.1604999

−0.1231173

−0.0399533

−0.00225

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

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

0.2365115

0.1575664

0.01321413

−0.06447045

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

−0.2363372

−0.1570521

−0.027384

−0.003

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

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

−0.002286399

−0.071583

−0.1820249

−0.2237071

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

−0.02109832

−0.08318887

−0.1736158

−0.167906