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GMAT数学符号和数学表达方式

主题词:GMAT数学 发布时间:2007-9-3 人气: 文字:

数学试题中常用的数学符号总结如下:

SYMBOL MEANING

    =   is equal to

    ≠   is not equal to

    ≈   is approximately equal to

    >   is greater than

    ≥   is greater than or equal to

    <   is less than

    ≤   is less than or equal to

        square root

    0.8 the repeating decimal 0.888…

    r s’t” r degrees s minutes t seconds

    ∠   angle

    right angle

    ┻   is perpendicular

    │x│  absolute value of x

    ∥   is parallel to

    △   triangle

    ~   is similar to

    ≌   is congruent to

    △x   delta x

    AB   arc  AB

    π   pi(3.1415…)

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;
                              xy
  the product of x and y;

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,从……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)


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