Quasi subordinations for bi-univalent functions with symmetric conjugate points

Many researchers have recently acquainted and researched several interesting subfamilies of bi-univalent function family δ and they have found non-sharp estimates on the first two Taylor-Maclaurin coefficients |a₂| and |a₃|. In this current work, the subfamily (Formula presented) of bi-univalent functions in the sense of symmetric conjugate points with quasi subordination is defined. The Maclaurin coefficients |a₂|, |a₃| and besides related with these coefficients |a₃ − a₂²| for functions belonging to this subfamily are derived. Further some corollaries are also presented.