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  1. 奮斗成就夢想初三優秀作文

    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、語文上還是數學上都有了很大的變化,以下便是新GRE數學考試重點介紹。

    奮斗成就夢想初三優秀作文(精選34篇)

      新版GRE數學復習重要考點: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.

      由于美國數學基礎教育的難度增加導致數學考試越來越難,但新GRE數學復習考點都是高中時候學到的知識點,考生不要過于緊張,把基本概念弄明白,再記住一些新版GRE數學必備的詞匯,那么相信新版GRE數學應該沒有問題。

      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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