2、本文对于代数学中的形式幂级数进行了初步说明。关键词:幂级数;函数;应用ABSTRACTPowerseriesisakindofseriesoffunctionswithsimpleformandextensiveapplication,whichcanbeusedtosolvemanyproblemspowerfullyintermsofthefunctionbecauseofitscalculatedproperties.Bytheanalysisproperties ofpowerseries,manyproblemsusually canbetransformed their fo