GRE_GMAT数学符号和常用的数学表达方式
文章作者 100test 发表时间 2007:05:09 11:31:03
来源 100Test.Com百考试题网
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
rightangle
┻ 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)