2013年新gre考试：gre数学考点之Commutative Law详解
Commutative Law Like real numbers, the order does not affect the product or sum of algebraic terms. Example: sum:3x+5y=5x+3y,2x2+4y+1=4y+1+2x2,(3x+2)+(y-4)=(y-4)+(3x+2). product:3x*5y=5y*3x,2x2*4y=4y*2x2,x2yz=yx2z=xzyx,(3x+2)*(y-4)=(y-4)*(3x+2) Remember: Subtraction is not commutative:(x+y)-(2x-y) ≠(2x-y)-(x+y) Division is not commutative:(x+y)/(2x-y) ≠(2x-y)/(x+y) [ 查看全文 ]2013年新gre考试：gre数学考点之Commutative Law详解的相关文章
2013年新gre考试：gre数学考点之Conditional详解
Conditional Probability of event A conditioned on the fact that event B has happened is called the conditional probability and written as P(AIB). P(AIB)=Probability Both A and B happens/ Probabilit...[ 查看全文 ]2013年新gre考试：gre数学考点之Geometric Figures详解
Geometric Figures If a point is selected at random inside a geometric figure, then the probability that the selected point lies inside a particular region is the ratio of their areas: area of the...[ 查看全文 ]2013年新gre考试：gre数学考点之Polynomials
今天针对新gre数学复习，小编给大家整理的是关于Polynomials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。 Polynomials Any expression with one or more terms is called polynomial. Example: 3x+2,4x2-x+2,and 4x+3xy+y2a...[ 查看全文 ]2013年新gre考试：gre数学考点之Substitution详解
新GRE数学考试的考点都是高中时候学到的知识点，考生不要过于紧张，把基本概念弄明白，再记住一些新GRE数学必备的词汇，那么相信新GRE数学应该没有问题。下面小编给大家整理的是关于Substitution的相关内容，希望对各位考生有所帮助。 Substitution Substitution is a method where one or more variables in an expres...[ 查看全文 ]2013年新gre考试：gre数学考点之Subtracting Polynomials详解
今天针对新gre数学复习，给大家整理的是关于Subtracting Polynomials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。 To subtract polynomial from another, subtract the like terms. Like terms are those with the same va...[ 查看全文 ]2013年新gre考试：gre数学考点之Total Members详解
Total Members Sometimes there are members that do not belong to either set A or B.In that case the total number of members=Size A+Size B-Number of common members+Number of members not in A or B. ...[ 查看全文 ]2013年新gre考试：gre数学考点Evaluating Expressions详解
Evaluating Expressions To evaluate an expression, plug in the specific values for the variables and simplify. Example For x=2, the expression 3x+5 evaluates to 3*2+5=11. For x=2 and y=1, the exp...[ 查看全文 ]
