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這些AEAS數(shù)學(xué)考試中的常見符號你都了解了嗎?

知識點       時間:2020-10-23 11:44      

 

  在AEAS數(shù)學(xué)考試中,各類數(shù)學(xué)符號的運用是非常普遍的,它對于我們考試答題來說至關(guān)重要。今天A加未來小編就為大家整理了在AEAS數(shù)學(xué)考試中的那些常見的數(shù)學(xué)符號,來看看你是不是都認(rèn)識呢?
 
這些AEAS數(shù)學(xué)考試中的常見符號你都了解了嗎?
 
  數(shù)學(xué)符號
 
  +
 
  plus加號;正號,“1+1”讀作:one plus one
 
  -
 
  minus['ma?n?s];negative['neg?t?v],減號;負(fù)號,“2-1”讀作:two minus one,“-3”讀作:minus three或negative three,“2-(-3)”讀作:two minus negative three
 
  ±
 
  plus-minus sign正負(fù)號,“±1”讀作:plus or minus one
 
  ×
 
  multiplied[’m?lt?’pla?d]by;times,乘號,“2×3”讀作:two multiplied by three或two times three
 
  ÷
 
  divided by除號,“4÷2”讀作:four divided by two
 
  =
 
  equals;is equal to等于號,“1+1=2”讀作:One plus one equals two.或One plus one is equal to two.
 
  ≠
 
  is not equal to不等于號,“a≠b”讀作:a is not equal to b
 
  ≌
 
  congruent['k??gr??nt]to,全等(兩個圖形形狀相同、大小相等),“△ABC≌△DEF”讀作:Triangle ABC is congruent to Triangle DEF.
 
  ≈
 
  approximately equal to約等于號,“3×3≈10”讀作:Three multiplied by three is approximately equal to ten.
 
 ?。?/div>
 
  is less than小于號,“1<2”讀作One is less than two.
 
  >
 
  is greater than大于號,“2>1”讀作:Two is greater than one.
 
  ≮
 
  is not less than不小于號,“3≮2”讀作:Three is not less than two.
 
  ≯
 
  is not greater than不大于號,“2≯4”讀作:Two is not greater than four.
 
  ≤
 
  is less than or equal to小于或等于號,“2≤3”讀作:Two is less than or equal to three.
 
  ≥
 
  is greater than or equal to大于或等于號,“5≥4”讀作:Five is greater than or equal to four.
 
  %
 
  per cent百分之……,“10%”讀作:ten percent
 
  ‰
 
  per mill[mil];per thousand千分之……,“10‰”讀作:ten per thousand
 
  ∞
 
  infinity[?n'f?n?t?]無限大號,“-∞”讀作:negative infinity
 
  ∝
 
  varies as與...成比例,“X∝Y”讀作:X varies as Y
 
  √ ̄
 
  square root平方根,“√ ̄16=4”讀作:The square root of sixteen is four.
 
  3√ ̄
 
  cube root立方根,“3√ ̄27=3”讀作:The cube root of 27 is 3.
 
  ∵
 
  since;because因為,“∵1+1=2”讀作:because one plus one equals two
 
  ∴
 
  hence;therefore所以,“∴1<2”讀作:hence one is less than two
 
  ∠
 
  angle角,“∠A”讀作:angle A,“∠A+∠B+∠C=180°”,讀作:The measure of angle A plus angle B plus angle C equals 180 degrees.
 
  ⌒
 
  semicircle['sem?s??kl]半圓,“⌒AB”讀作:semicircle AB
 
  ⊙
 
  circle圓,“⊙A”讀作:circle A
 
  ○
 
  circumference[s?'k?mf(?)r(?)ns]圓周,“○=π×d”讀作:Pi multiplied by d equals circumference.
 
  π
 
  pi constant圓周率,“π×d”讀作:pi multiplied by d
 
  △
 
  triangle三角形,“△ABC”讀作:triangle ABC,What is the area of triangle ABC?求三角形ABC的面積。
 
  ⊥
 
  perpendicular to[,p??p(?)n'd?kj?l?]垂直于,“A⊥B”讀作:A is perpendicular to B.
 
  //
 
  parallel['pær?lel]to平行于,Line AB is parallel to line CD.
 
  ∪
 
  union of并,合集,“A∪B”讀作:the union of A and B
 
  ∩
 
  intersection[?nt?'sek?(?)n]of交,通集,“A∩B”讀作:The intersection of A and B
 
  ∫
 
  the integral[??nt?ɡr?l]of……的積分,“∫x”讀作:the integral of x
 
  ∑
 
  summation of總和,“∑x”讀作:the summation of x36,equation[?'kwe??(?)n]
 
  方程式、等式
 
  “y=kx”讀作:Y varies as x.K is"the constant of variation.y與x成正比(y是x的正比函數(shù)),k是常數(shù)。
 
  “y=k/x”讀作:Y varies inversely as x.y與x成反比例(y是x的反比例函數(shù))。
 
  有關(guān)分?jǐn)?shù)和小數(shù)
 
  proper fraction真分?jǐn)?shù)
 
  improper fraction假分?jǐn)?shù)
 
  mixed number帶分?jǐn)?shù)
 
  tenths unit十分位
 
  vulgar fraction,common fraction普通分?jǐn)?shù)
 
  simple fraction簡分?jǐn)?shù)
 
  complex fraction繁分?jǐn)?shù)
 
  numerator分子
 
  denominator分母
 
  (least)common denominator(最小)公分母
 
  quarter四分之一
 
  decimal fraction純小數(shù)
 
  infinite decimal無窮小數(shù)
 
  recurring decimal循環(huán)小數(shù)
 
  基本數(shù)學(xué)概念
 
  arithmetic mean算術(shù)平均值
 
  weighted average加權(quán)平均值
 
  geometric mean幾何平均數(shù)
 
  exponent指數(shù),冪
 
  base乘冪的底數(shù),底邊
 
  cube立方數(shù),立方體
 
  square root平方根
 
  cube root立方根
 
  common logarithm常用對數(shù)
 
  digit數(shù)字
 
  constant常數(shù)
 
  variable變量
 
  inverse function反函數(shù)
 
  complementary function余函數(shù)
 
  linear一次的,線性的
 
  factorization因式分解
 
  absolute value絕對值,e.g.|-32|=32
 
  round off四舍五入
 
  有關(guān)數(shù)論
 
  natural number自然數(shù)
 
  positive number正數(shù)
 
  negative number負(fù)數(shù)
 
  odd integer,odd number奇數(shù)
 
  even integer,even number偶數(shù)
 
  integer,whole number整數(shù)
 
  positive whole number正整數(shù)
 
  negative whole number負(fù)整數(shù)
 
  consecutive number連續(xù)整數(shù)
 
  real number,rational number實數(shù),有理數(shù)
 
  irrational(number)無理數(shù)
 
  inverse倒數(shù)
 
  composite number合數(shù)e.g.4,6,8,9,10,12,14,15……
 
  prime number質(zhì)數(shù)e.g.2,3,5,7,11,13,15……
 
  reciprocal倒數(shù)
 
  common divisor公約數(shù)
 
  multiple倍數(shù)
 
  (least)common multiple(最小)公倍數(shù)
 
  (prime)factor(質(zhì))因子
 
  common factor公因子
 
  ordinary scale,decimal scale十進(jìn)制
 
  nonnegative非負(fù)的
 
  tens十位
 
  units個位
 
  mode眾數(shù)
 
  median中數(shù)
 
  common ratio公比
 
  數(shù)列
 
  arithmetic progression(sequence)等差數(shù)列
 
  geometric progression(sequence)等比數(shù)列
 
  其它
 
  approximate近似
 
  (anti)clockwise(逆)順時針方向
 
  cardinal基數(shù)
 
  ordinal序數(shù)
 
  direct proportion正比
 
  distinct不同的
 
  estimation估計,近似
 
  parentheses括號
 
  proportion比例
 
  unit單位,位
 
  permutation排列
 
  combination組合
 
  table表格
 
  trigonometric function三角函數(shù)
 
  怎么樣,這些AEAS數(shù)學(xué)考試符號你都掌握了嗎?在考試前,同學(xué)們一定要保證自己的基礎(chǔ)知識這方面有一個非常扎實的掌握,這是我們考試答題的根基,如果學(xué)習(xí)中存在什么薄弱的地方,可以咨詢我們的線上老師,讓專業(yè)的AEAS輔導(dǎo)老師一對一為你解答。

 

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