GRE/GMAT數(shù)學(xué)符號(hào)

字號(hào):

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
    根號(hào) 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,從……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