Mahmood, ShahidSokół, JanuszSrivastava, H.M.Malik, Sarfraz Nawaz2019-04-262019-04-2620192019Mahmood, S., Sokół, J., Srivastava, H.M. & Malik, S.N. (2019). Some Reciprocal Classes of Close-to-Convex and Quasi-Convex Analytic Functions. Mathematics, 7(4), 309. https://doi.org/10.3390/math7040309http://dx.doi.org/10.3390/math7040309http://hdl.handle.net/1828/10764The present paper comprises the study of certain functions which are analytic and defined in terms of reciprocal function. The reciprocal classes of close-to-convex functions and quasi-convex functions are defined and studied. Various interesting properties, such as sufficiency criteria, coefficient estimates, distortion results, and a few others, are investigated for these newly defined sub-classes.ensubordinationfunctions with positive real partreciprocalsArticleDepartment of Mathematics and Statistics