Figure 4From: Dual solutions of stagnation-point flow of a nanofluid over a stretching surface Variation of concentration for different values of λ , when (a) K=1 , Sc=1 , K s =1 , M=2 , f w =1 and (b) K=1 , Sc=1 , K s =1 , M=2 , f w =−1 . Back to article page