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新GRE数学全部考点及解析(10).

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新GRE数学考试要求的是中学的数学知识,考生们对于新GRE数学上面来说还是比较有把握,不过说到具体的GRE数学考点要求就不一定这么清楚。下面就为大家介绍新GRE数学考点及这些GRE数学考点解析,帮助考生们系统的复习一遍新GRE数学,梳理整合新GRE数学考试所需要的知识。

  GRE数学考点:Evaluating Expressions   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 expression xy/(x+y) evaluates to 2*1/(2+1)=2/3.   For x=2, the expression 4yx/(y+x) evaluates to 8y/(y+2).   Remember   After evaluation the expression does not contain the variable in any form.   GRE数学考点介绍:Distributive Law   Like real number, when multiplying a sum or difference of terms, the distributive property of multiplication allows us to distribute the multiplying term among the terms being added or subtracted.   Example:   3*(2x+y)=3*2x+3*y,   3a*(2x+y)=3a*2x+3a*y,   3x*(2x+y)=3x*2x+3x*y.   (3x+4)*(2x+y)=(3x+4)*2x+(3x+4)*y=3x*2x+4*2x+3x*y+4*y.   Remember:   Do not forget to multiply all the terms inside the parenthesis.   For division, the sum and difference in the numerator can be distributed:(x+y)/(2x+y)=x/(2x+y)+y/(2x+y).   For division, the sum and difference in the denominator cannot be distributed :(x+y)/(2x+y)≠(x+y)/2x+(x+y)/y.   以上就是新GRE数学考点及GRE数学考点解析的介绍,希望这些知识点的介绍可以帮助大家复习新GRE数学,为大家复习新GRE数学提供条件。希望考生们认真复习新GRE数学考试,能够取得自己理想的成绩。澳际也会不断的为大家分享更多有助于考生们复习考试的新GRE考试材料及技巧。
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