Heliyon (Apr 2024)

Fekete-Szegö type functionals associated with certain subclasses of bi-univalent functions

  • Sa'ud Al-Sa'di,
  • Ibrar Ahmad,
  • Syed Ghoos Ali Shah,
  • Saqib Hussain,
  • Saima Noor

Journal volume & issue
Vol. 10, no. 7
p. e28074

Abstract

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In this article, we define and discuss some new subclasses of bi-univalent functions associated with Fibonacci numbers and shell-like curves. We estimate the first two Taylor-Maclaurin coefficients for functions belonging to these classes. We study the inequalities related with Fekete-Szegö type. Furthermore, we point out some corollaries related to existing result.

Keywords