Turán type inequalities for generalized inverse trigonometric functions
arXiv:1305.0938 · doi:10.2298/FIL1502303B
Abstract
In this paper we study the inverse of the eigenfunction of the one-dimensional -Laplace operator and its dependence on the parameter , and we present a Turán type inequality for this function. Similar inequalities are given also for other generalized inverse trigonometric and hyperbolic functions. In particular, we deduce a Turán type inequality for a series considered by Ramanujan, involving the digamma function.
10 pages