resulted sharp for a new subclass of ma-minda starlike functions

In this paper, we generalize the q-derivative operator, which plays an essential role in quantum calculus. in fact, by using the hadamard product and extended koebe function we define the following (α; β; γ)−derivative operator dα;β;γf(z) = 1 z ff(z) ∗ lα;β;γ(z)g ; where lα;β;γ(z) = 2(1 − γ)z (1 − αz)(1 − βz) , α; β 2 [−1; 1], αβ ̸= ±1 and γ 2 [0; 1). so, by using subordination relation, the operatordα;β;γf(z) and a function ϕδ(z) = 1 + δz= exp(δz), (0 < δ ≤ 1), we present a new particular ma-minda class.