这些AEAS数学考试中的常见符号你都了解了吗?
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AEAS数学考试 AEAS数学
在AEAS数学考试中,各类数学符号的运用是非常普遍的,它对于我们考试答题来说至关重要。今天易伯华小编就为大家整理了在AEAS数学考试中的那些常见的数学符号,来看看你是不是都认识呢?
数学符号
+
plus加号;正号,“1+1”读作:one plus one
-
minus['maɪnəs];negative['negətɪv],减号;负号,“2-1”读作:two minus one,“-3”读作:minus three或negative three,“2-(-3)”读作:two minus negative three
±
plus-minus sign正负号,“±1”读作:plus or minus one
×
multiplied[’mʌltɪ’plaɪd]by;times,乘号,“2×3”读作:two multiplied by three或two times three
÷
divided by除号,“4÷2”读作:four divided by two
=
equals;is equal to等于号,“1+1=2”读作:One plus one equals two.或One plus one is equal to two.
≠
is not equal to不等于号,“a≠b”读作:a is not equal to b
≌
congruent['kɒŋgrʊənt]to,全等(两个图形形状相同、大小相等),“△ABC≌△DEF”读作:Triangle ABC is congruent to Triangle DEF.
≈
approximately equal to约等于号,“3×3≈10”读作:Three multiplied by three is approximately equal to ten.
<
is less than小于号,“1<2”读作One is less than two.
>
is greater than大于号,“2>1”读作:Two is greater than one.
≮
is not less than不小于号,“3≮2”读作:Three is not less than two.
≯
is not greater than不大于号,“2≯4”读作:Two is not greater than four.
≤
is less than or equal to小于或等于号,“2≤3”读作:Two is less than or equal to three.
≥
is greater than or equal to大于或等于号,“5≥4”读作:Five is greater than or equal to four.
%
per cent百分之……,“10%”读作:ten percent
‰
per mill[mil];per thousand千分之……,“10‰”读作:ten per thousand
∞
infinity[ɪn'fɪnɪtɪ]无限大号,“-∞”读作:negative infinity
∝
varies as与...成比例,“X∝Y”读作:X varies as Y
√ ̄
square root平方根,“√ ̄16=4”读作:The square root of sixteen is four.
3√ ̄
cube root立方根,“3√ ̄27=3”读作:The cube root of 27 is 3.
∵
since;because因为,“∵1+1=2”读作:because one plus one equals two
∴
hence;therefore所以,“∴1<2”读作:hence one is less than two
∠
angle角,“∠A”读作:angle A,“∠易伯华∠B+∠C=180°”,读作:The measure of angle A plus angle B plus angle C equals 180 degrees.
⌒
semicircle['semɪsɜːkl]半圆,“⌒AB”读作:semicircle AB
⊙
circle圆,“⊙A”读作:circle A
○
circumference[sə'kʌmf(ə)r(ə)ns]圆周,“○=π×d”读作:Pi multiplied by d equals circumference.
π
pi constant圆周率,“π×d”读作:pi multiplied by d
△
triangle三角形,“△ABC”读作:triangle ABC,What is the area of triangle ABC?求三角形ABC的面积。
⊥
perpendicular to[,pɜːp(ə)n'dɪkjʊlə]垂直于,“A⊥B”读作:A is perpendicular to B.
//
parallel['pærəlel]to平行于,Line AB is parallel to line CD.
∪
union of并,合集,“A∪B”读作:the union of A and B
∩
intersection[ɪntə'sekʃ(ə)n]of交,通集,“A∩B”读作:The intersection of A and B
∫
the integral[ˈɪntɪɡrəl]of……的积分,“∫x”读作:the integral of x
∑
summation of总和,“∑x”读作:the summation of x36,equation[ɪ'kweɪʒ(ə)n]
方程式、等式
“y=kx”读作:Y varies as x.K is"the constant of variation.y与x成正比(y是x的正比函数),k是常数。
“y=k/x”读作:Y varies inversely as x.y与x成反比例(y是x的反比例函数)。
有关分数和小数
proper fraction真分数
improper fraction假分数
mixed number带分数
tenths unit十分位
vulgar fraction,common fraction普通分数
simple fraction简分数
complex fraction繁分数
numerator分子
denominator分母
(least)common denominator(最小)公分母
quarter四分之一
decimal fraction纯小数
infinite decimal无穷小数
recurring decimal循环小数
基本数学概念
arithmetic mean算术平均值
weighted average加权平均值
geometric mean几何平均数
exponent指数,幂
base乘幂的底数,底边
cube立方数,立方体
square root平方根
cube root立方根
common logarithm常用对数
digit数字
constant常数
variable变量
inverse function反函数
complementary function余函数
linear一次的,线性的
factorization因式分解
absolute value绝对值,e.g.|-32|=32
round off四舍五入
有关数论
natural number自然数
positive number正数
negative number负数
odd integer,odd number奇数
even integer,even number偶数
integer,whole number整数
positive whole number正整数
negative whole number负整数
consecutive number连续整数
real number,rational number实数,有理数
irrational(number)无理数
inverse倒数
composite number合数e.g.4,6,8,9,10,12,14,15……
prime number质数e.g.2,3,5,7,11,13,15……
reciprocal倒数
common divisor公约数
multiple倍数
(least)common multiple(最小)公倍数
(prime)factor(质)因子
common factor公因子
ordinary scale,decimal scale十进制
nonnegative非负的
tens十位
units个位
mode众数
median中数
common ratio公比
数列
arithmetic progression(sequence)等差数列
geometric progression(sequence)等比数列
其它
approximate近似
(anti)clockwise(逆)顺时针方向
cardinal基数
ordinal序数
direct proportion正比
distinct不同的
estimation估计,近似
parentheses括号
proportion比例
unit单位,位
permutation排列
combination组合
table表格
trigonometric function三角函数
怎么样,这些AEAS数学考试符号你都掌握了吗?在考试前,同学们一定要保证自己的基础知识这方面有一个非常扎实的掌握,这是我们考试答题的根基,如果学习中存在什么薄弱的地方,可以咨询我们的线上老师,让专业的AEAS辅导老师一对一为你解答。
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