Table 1. Convergence of solutions when β = 0.1, α = 0.2, γ = Pr = 0.7 = k₁ = k₂ and Sc = 1.

Order of approximation	−θ′(0)	g′(0)
1	0.45238	0.28048
4	0.49606	0.26213
10	0.49112	0.26099
12	0.49114	0.26103
15	0.49114	0.26104
20	0.49114	0.26104
25	0.49114	0.26104
30	0.49114	0.26104
35	0.49114	0.26104
40	0.49114	0.26104