Topic: the recursive formula for the series - Abstract: recursive formula for the series-of nine types, and various types of solutions for analysis of its status and role. Identify which contains the mathematical literacy and the ability to solve practical problems between the culture of the dialectical relationship between both knowledge, or in the capacity, is further studying other series on the basis of knowledge. The recurrence formula has extensive practical application, in the future continue to learn the basic knowledge of advanced mathematics, and can solve the series of problems - of-law, but also training in computing power and reasoning ability and equivalent transformation function equations, a few - the combination of the important mathematical way of thinking.