the classes M and N defined above. In order to get the main results, we need the following
known results. … [2] Al-Abbadi, MH, Darus, M., Hankel determinant for certain class of
analytic function defined by generalized derivative operators, Tamkang J. Math., 43(2012),
445-453. [3] Babalola, KO, On … [29] Raza, M., Malik, SN, Upper bound of the third Hankel
determinant for a class of analytic functions related with Lemniscate of Bernoulli, J. Inequal …