 2x（-4）=-8，你能用英語把這個(gè)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(shù)表達(dá)等，你是不是心慌了呢？別著急！下面給你整理歪果仁如何表達(dá)各種數(shù)學(xué)符號和標(biāo)點(diǎn)符號，看完后你馬上就會說了~~ Mathematical symbols 數(shù)學(xué)符號 01. +: plus 加號;正號 “1+1”讀作：one plus one 02. -: minus; negative 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 03. ±: plus-minus sign 正負(fù)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 等于號 “1+1=2”讀作：One plus one equals two. 或 One plus one is equal to two. 07. ≠: is not equal to 不等于號 “a≠b”讀作：a is not equal to b 08. ≌: congruent to 全等（兩個(gè)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 約等于號 “3×3≈10” 讀作：Three multiplied by three is approximately equal to ten. 10. <: is less than 小于號 “1<2”讀作 One is less than two. 11. >: is greater than 大于號 “2>1”讀作：Two is greater than one. 12. ≮: is not less than 不小于號 “3≮2”讀作：Three is not less than two. 13. ≯: is not greater than 不大于號 “2≯4” 讀作：Two is not greater than four. 14. ≤: is less than or equal to 小于或等于號 “2≤3”讀作：Two is less than or equal to three. 15. ≥: is greater than or equal to 大于或等于號 “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?yàn)?/p> “∵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 垂直于 “A⊥B”讀作：A is perpendicular to B. 31. //: parallel to 平行于 Line AB is parallel to line CD. 32. ∪: union of 并，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(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)）。 |
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