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GRE/GMAT数学符号

2005-11-25 00:00

  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

  根号 square root

  0.888888… the repeating decimal

  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

  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;

  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                                         1/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. one third                                               1/3

  16. a of x (a fraction of x);                             ax

  75% of x (a percent of x)                              0.75x

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