小伙伴們，GRE考試大家復(fù)習(xí)的怎么樣了呢？下面是幫考網(wǎng)分享的一些GRE考試數(shù)學(xué)部分的復(fù)習(xí)資料，一起來看看吧！

一、常見表達(dá)式

1.is equal to; is the same as =

the result is; yields; gives

2.the sum of x and y; the total of x and y;

x added to y; x increased by y; x+y

x more then y; x greater than y

3.x minus y; x less y;

the difference of x and y; x take away y;

from x subtract y\' x decreased by y;  x-y

x diminished by y; y is subtracted from x;

y less than x (note the reversal)

4. x multiplied by y;

the product of x and y; xy

5. divided by y;

the quotient of x and y; x y，

y divided into x (note the reversal)

6. A and B are factors of C;

A and B are divisors of C;

C is divisible by A and by B; A B=C

C is a multiple of A and of B;

A divides C and B divides C;

7. the ratio of a to b  a：b，

8. reciprocal of x

9. x times as many z as y;  z=x y

10. a squared;

a to the second power a2

11. a cubed;  a3

a to the third power

12. between a and b   (a，b)

between a and b， inclusive  [a，b]

13. off  低于，從……中扣除

14. account for  占

15. third

16. of x (a fraction of x); x，0.75x

75% of x (a percent of x)

二、數(shù)學(xué)考試考點(diǎn)

Solve Equation of One Variable

To solve a linear equation isolate the variable, that is bring the variable to one side with arithmetic operations.

Example:

To solve ax+b=c use the following steps:

1.ax+b=c, subtract b from both sides

2.ax=c-b, divide both sides by a

3.x=(c-b)/a

Remember:

All linear equations of one variable can be written as ax+b=c and the solution is x=(c-b)/a.

GRE考試數(shù)學(xué)考點(diǎn)：Substitution

Substitution

Substitution is a method where one or more variables in an expression is replaced by numbers or another set of variables.To evaluate an expression specific numbers are used as substitute. To express in terms of another set of variables, variables are replaced by the new set of variables.

Example:

If x=3, then 2x2+4x+1 can be evaluated by substituting 3 for x.

Replacing all x by 3, we get 2*32+4*3+1=31.

If x=2+y, then x2-3 can be expressed in terms of y by replacing all x by (2+y):(2+y)2-3=y2+4y+1.

Remember:

Do not forget to replace all occurrences of the variable.

After substitution the variable does not appear anywhere in the expression.

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