Table 3.

Comparison of − θ′(0) for different Pr with n = 1, β → ∞, Bi ₁ → ∞, Bi ₂₁ → ∞, and M = K = Gr = Gm = δ = R _d = Le = N _t = N _b = R = 0

− θ′(0)
Pr	Yih [43]	Aurangzaib et al. [28]	Pal et al. [20]	Present results
0.72	0.8086	0.8086	0.8086	0.8088
1	1.0000	1.0000	1.0000	1.0000
3	1.9237	1.9237	1.9237	1.9237
10	3.7207	3.7207	3.7206	3.7208
100	12.2940	12.3004	12.2939	12.3004