GRE数学符号和常用的数学表达方式
文章作者 100test 发表时间 2007:02:25 20:17:19
来源 100Test.Com百考试题网
GRE/GMAT数学符号和常用的数学表达方式
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）