简介:Theconceptofconvextypefunctionisintroducedinthispaper,fromwhichakindofconvex-decompositionapproachisproposed.Asoneofapplicationsofthisapproach,theapproximationoftheconvextypefunctionbythepartialsumofitsFourierseriesisinvestigated.Moreover,theorderofapproximationisdescribedwiththe2thcontinuousmodulus.