2 x(-4)=-8,你能用英語把這個等式(equation)讀出來嗎?
被難倒了吧!如果還有波形符號、立方根、函數表達等,你是不是心慌了呢?
要知道,新加坡的學校可是用英文教學的,數學也是英文出題英文解答!
想要進入新加坡的政府學校,還要通過AEIS考試,看不懂數學題可怎麼辦?
別著急!小文給你整理了各種數學符號,看完後你馬上就懂題意了~~
Mathematical symbols
數學符號
01. +: plus 加號;正號
「1+1」讀作:one plus one
02. - : minus; negative 減號;負號
「2-1」讀作:two minus one
「-3」讀作:minus three或negative three
「2-(-3)」讀作:two minus negative three
03. ±: plus-minus sign 正負號
「±1」 讀作:plus or minus one
04. ×: multiplied by ; times 乘號
「2×3」 讀作:two multiplied by three 或 two times three
05. ÷: divided by 除號
「4÷2」讀作:four divided by two
06. =: equals; is equal to 等於號
「1+1=2」讀作:One plus one equals two. 或 One plus one is equal to two.
07. ≠: is not equal to 不等於號
「a≠b」讀作:a is not equal to b
08. ≌: congruent 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.
09. ≈: approximately equal to 約等於號
「3×3≈10」 讀作:Three multiplied by three is approximately equal to ten.
10. <: is less than 小於號
「1<2」讀作 One is less than two.
11. >: is greater than 大於號
「2>1」讀作:Two is greater than one.
12. ≮: is not less than 不小於號
「3≮2」讀作:Three is not less than two.
13. ≯: is not greater than 不大於號
「2≯4」 讀作:Two is not greater than four.
14. ≤: is less than or equal to 小於或等於號
「2≤3」讀作:Two is less than or equal to three.
15. ≥: is greater than or equal to 大於或等於號
「5≥4」讀作:Five is greater than or equal to four.
16. %: percent 百分之……
「10%」讀作:ten percent
17. ‰ : per mill ; per thousand 千分之……
「10‰」讀作:ten per thousand
18. ∞: infinity 無限大號
「-∞」 讀作:negative infinity
19. ∝: varies as 與...成比例
「X∝Y」讀作:X varies as Y
20. √ ̄: square root 平方根
「√ ̄16=4」讀作:The square root of sixteen is four.
21. 3√ ̄: cube root 立方根
「3√ ̄27=3」讀作:The cube root of 27 is 3.
22. ∵: since; because 因為
「∵1+1=2」讀作:because one plus one equals two
23. ∴: hence; therefore 所以
「∴1<2」讀作:hence one is less than two
24. ∠: 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.
25. ⌒: semicircle 半圓
「⌒AB」讀作:semicircle AB
26. ⊙: circle 圓
「⊙A」讀作:circle A
27. ○: circumference 圓周
「○=π×d」讀作:Pi multiplied by d equals circumference.
28. π: pi constant 圓周率
「π×d」讀作:pi multiplied by d
29. △: triangle 三角形
「△ABC」讀作:triangle ABC
What is the area of triangle ABC? 求三角形ABC的面積。
30. ⊥: perpendicular to 垂直於
「A⊥B」讀作:A is perpendicular to B.
31. //: parallel to 平行於
Line AB is parallel to line CD.
32. ∪: union of 並,合集
「A∪B」讀作:the union of A and B
33. ∩: intersection of 交,通集
「A∩B」讀作:The intersection of A and B
34. ∫: the integral of ……的積分
「∫x」讀作:the integral of x
35. ∑: summation of 總和
「∑x」讀作:the summation of x
36 equation 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),k是常數。
「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