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奮斗成就夢想初三優(yōu)秀作文

時間:2025-10-28 05:45:10 初三作文 我要投稿

奮斗成就夢想初三優(yōu)秀作文(精選34篇)

  自從新GRE改革以來,新GRE考試無論是在寫作、語文上還是數(shù)學(xué)上都有了很大的變化,以下便是新GRE數(shù)學(xué)考試重點介紹。

奮斗成就夢想初三優(yōu)秀作文(精選34篇)

  新版GRE數(shù)學(xué)復(fù)習(xí)重要考點: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.

  由于美國數(shù)學(xué)基礎(chǔ)教育的難度增加導(dǎo)致數(shù)學(xué)考試越來越難,但新GRE數(shù)學(xué)復(fù)習(xí)考點都是高中時候?qū)W到的知識點,考生不要過于緊張,把基本概念弄明白,再記住一些新版GRE數(shù)學(xué)必備的詞匯,那么相信新版GRE數(shù)學(xué)應(yīng)該沒有問題。

  AP

  Average of n numbers of arithmetic proGREssion is the average of the

  smallest and the

  largest number of them. The average of m number can also be written as

  x + d/2.

  Example:

  The average of all integers from 1 to 5 is /2=3

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