This paper introduced two methods for the solution to the sum limit by using limit definition and Stolz formula,and mainly analyzes the solution to the sum limit by using equivalent substitution and its wrong viewpoint,which solved a class of special "sum" limit problems.
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方辉平.关于和式极限的探求[J].重庆工商大学学报(自然科学版),2012,29(3):55-57 FANG Hui-ping. Research on Sum Limit[J]. Journal of Chongqing Technology and Business University(Natural Science Edition),2012,29(3):55-57