TY - JFULL AU - Norlyda Mohamed and Daud Mohamad and Shaharuddin Cik Soh PY - 2011/11/ TI - Extremal Properties of Generalized Class of Close-to-convex Functions T2 - International Journal of Mathematical and Computational Sciences SP - 1588 EP - 1592 VL - 5 SN - 1307-6892 UR - https://publications.waset.org/pdf/14045 PU - World Academy of Science, Engineering and Technology NX - Open Science Index 58, 2011 N2 - Let Gα ,β (γ ,δ ) denote the class of function f (z), f (0) = f ′(0)−1= 0 which satisfied e δ {αf ′(z)+ βzf ′′(z)}> γ i Re in the open unit disk D = {z ∈ı : z < 1} for some α ∈ı (α ≠ 0) , β ∈ı and γ ∈ı (0 ≤γ 0 . In this paper, we determine some extremal properties including distortion theorem and argument of f ′( z ) . ER -