Initial Coefficients Upper Bounds for Certain Subclasses of Bi-Prestarlike Functions

In this article, we introduce and study the behavior of modules first two coefficients for classes NΣ(γ,λ,δ,μ;α) NΣ*(γ,λ,δ,μ;β) normalized holomorphic bi-univalent functions that are connected with prestarlike functions. We determine upper bounds initial Taylor–Maclaurin |a2| |a3| each these families, also point out some special cases consequences our main results. The is closely those Ruscheweyh who in 1977 introduced order μ using a convolution operator proofs results based on well-known Carathédory’s inequality real positive part open unit disk. Our generalize few earlier ones obtained by Li Wang, Murugusundaramoorthy et al., Brannan Taha, could be useful work geometric function theory one-variable