Abstract
We study the log-convexity of the extended beta functions. As a consequence, we establish Turan-type inequalities. The monotonicity, log-convexity, log-concavity of extended hypergeometric functions are deduced by using the inequalities on extended beta functions. The particular cases of those results also give the Turan-type inequalities for extended confluent and extended Gaussian hypergeometric functions. Some reverses of Turan-type inequalities are also derived.