今天针对新gre数学复习,gre给大家整理的是关于Sum of Arithmetic Progression的相关内容,这些概念在考试中一定会考到的。希望考生能再接再厉,取得一个好成绩,突破新gre数学难的困境。
Sum of Arithmetic Progression
The sum of n-numbers of an arithmetic progression is given by
S=nxdn/2
where x is the first number and d is the constant increment.
example:
sum of first 10 positive odd numbers:101+2109/2=10+90=100
sum of first 10 multiples of 7 starting at 7: 107+7109/2=70+315=385
remember:
For a descending AP the constant difference is negative.
俗话说:工欲善其事必先利其器。有一部分考生认为新GRE数学具有一定的难度,这其中的原因是由于考生在复习时没有把新gre数学的基础打牢。想要新gre数学考好,复习的时候一定要把基本概念和重要考点都弄扎实。
上一篇: 新GRE数学方法:代入检验和界定范围
下一篇: 关于GRE数学专项考试的问题解答
体坛英语资讯:Schleck takes Tours 17th stage
体坛英语资讯:Jennings shines in China-NBA charity game
体坛英语资讯:Spaniard Contador wins third Tour de France
体坛英语资讯:French soccer player Ribery under judicial investigation on sex probe
体坛英语资讯:Mavs re-sign Dirk Nowitzki
体坛英语资讯:London Games ticket pricing not confirmed yet: chairman Coe
体坛英语资讯:Ronaldo admits not ready to play
体坛英语资讯:Ronaldo participates in physical activity but not yet ready to play
体坛英语资讯:Palmeiras announce Valdivias return
体坛英语资讯:Internacional defeat Flamengo 1-0
体坛英语资讯:FIFA inspects Australia for World Cup bid
体坛英语资讯:Messi unable to score in Decos charity match
体坛英语资讯:Flamengo sack murder-suspect goalkeeper Bruno
体坛英语资讯:Murray fires coach Maclagan
体坛英语资讯:Benzema denies charges in prostitute case
体坛英语资讯:Agent frustrates Brazilian clubs hopes of landing Ronaldinho
体坛英语资讯:Ribery, Benzema to miss France squad over prostitution probe
体坛英语资讯:German head coach Joachim Loew extends contract
体坛英语资讯:Gremios loss to Gremio Prudente puts coachs job in jeopardy
体坛英语资讯:Japans Iizuka upset winner in mens 200m final at IAAF World Junior Championships
体坛英语资讯:Yao Ming fears he wont be bigger, better than ever
体坛英语资讯:Cavendish wins Tours 18th stage
体坛英语资讯:China analyzing feasibility of 2026 World Cup bid
体坛英语资讯:S Koreas star figure skater Kim Yu-na looks beyond Olympics
体坛英语资讯:Bryant undergoes knee surgery
体坛英语资讯:Maradona stays on as Argentina coach
体坛英语资讯:Stoudemire pulls out US squad at basketball worlds
体坛英语资讯:Birmingham beat Beijing Guoan 1-0 at charity-oriented friendly
体坛英语资讯:London to celebrate two-year Olympic countdown Tuesday
体坛英语资讯:American Bettencourt lifts Reno-Tahoe Open title