新GRE數(shù)學(xué)考點(diǎn)

A product of coefficients and any number of variables with exponents is called a term. Terms that have the same variables with identical exponents for each variables are called like terms.

　Example:

　3x,axy,4x2yz are terms. 3x+2 is not term: it is a sum of two terms.

　3x2y and 7x2y are like terms since both have the same variables x and y with identical exponents: 2 for x and 1 for y.

　Remember:

　There cannot be any addition or subtraction in a single term.

　Since multiplication is associative, rearrangements of variables does not change a term:3xy is same as 3yx.

　3x2y and 7xyx are like terms.

　俗話說(shuō)：“工欲善其事必先利其器”。有一部分考生認(rèn)為新GRE數(shù)學(xué)具有一定的難度，這其中的原因是由于考生在復(fù)習(xí)時(shí)沒有把新gre數(shù)學(xué)的基礎(chǔ)打牢。想要新gre數(shù)學(xué)考好，復(fù)習(xí)的時(shí)候一定要把基本概念和重要考點(diǎn)都弄扎實(shí)。