Generalized weighted Stechkin–Marchaud-type inequalities for Baskakov–Durrmeyer operators

In this paper, we introduce new weighted modulus of smoothness ω φ β 2 ( f ; t ) w , λ and prove the generalization of Stechkin–Marchaud-type inequalities of weighted approximation for Baskakov–Durrmeyer operators, from which the inverse results of Baskakov–Durrmeyer operators with ω φ β 2 ( f ; t ) w , λ are obtained.