Second Hankel Determinant for certain class of bi-univalent functions defined by Chebyshev polynomials

H. Orhan, N. Magesh, V. K. Balaji

Making use of Chebyshev polynomials, we obtain upper bound estimate for the second Hankel determinant of a subclass ${\mathcal{N}}_{\sigma }^{\mu }\left(\lambda ,t\right)$ of bi-univalent function c…