» 您尚未 登录   注册 | 帮助 | 首页
寻论网 -> 寻论社区-(中学生-大学生顶级论坛) -> 中学数学 非常解答  -> 数学公式的英语读法您是本帖的第 682 个阅读者
   
  --> 本页主题: 数学公式的英语读法 加为IE收藏   收藏主题   上一主题 | 下一主题
123



级别: 进士级版主该用户目前不在线
发贴: 6156
威望: 4760
金币: 16543
注册时间:2004-09-10
最后登陆:2007-06-30
 数学公式的英语读法

1.Logic

　　∃ there exist

　　∀ for all

　　p⇒q p implies q / if p, then q

　　p⇔q p if and only if q /p is equivalent to q / p and q are equivalent

　　2.Sets

　　x∈A x belongs to A / x is an element (or a member) of A

　　x∉A x does not belong to A / x is not an element (or a member) of A

　　A⊂B A is contained in B / A is a subset of B

　　A⊃B A contains B / B is a subset of A

　　A∩B A cap B / A meet B / A intersection B

　　A∪B A cup B / A join B / A union B

　　AB A minus B / the diference between A and B

　　A×B A cross B / the cartesian product of A and B

　　3. Real numbers

　　x+1 x plus one

　　x-1 x minus one

　　x±1 x plus or minus one

　　xy xy / x multiplied by y

　　(x - y)(x + y) x minus y, x plus y

　　x y x over y

　　= the equals sign

　　x = 5 x equals 5 / x is equal to 5

　　x≠5 x (is) not equal to 5

　　x≡y x is equivalent to (or identical with) y

　　x ≡ y x is not equivalent to (or identical with) y

　　x > y x is greater than y

　　x≥y x is greater than or equal to y

　　x < y x is less than y

　　x≤y x is less than or equal to y

　　0 < x < 1 zero is less than x is less than 1

　　0≤x≤1 zero is less than or equal to x is less than or equal to 1

　　| x | mod x / modulus x
微笑是一种气质，
气质得益于修养，
微笑是一种境界，
境界需要磨练，
尘世中，
受约束的是生命，
不受约束的是心情，
只要心情晴朗，
人生就没有雨天。

[楼 主] 来自: | 发帖时间: 2007/05/14 17:43		 回到顶端
123



级别: 进士级版主该用户目前不在线
发贴: 6156
威望: 4760
金币: 16543
注册时间:2004-09-10
最后登陆:2007-06-30
 

　　x 2 x squared / x (raised) to the power 2

　　x 3 x cubed

　　x 4 x to the fourth / x to the power four

　　x n x to the nth / x to the power n

　　x −n x to the (power) minus n

　　x (square) root x / the square root of x

　　x 3 cube root (of) x

　　x 4 fourth root (of) x

　　x n nth root (of) x

　　( x+y ) 2 x plus y all squared

　　( x y ) 2 x over y all squared

　　n! n factorial

　　x ^ x hat

　　x ¯ x bar

　　x ˜ x tilde

　　x i xi / x subscript i / x suffix i / x sub i

　　∑ i=1 n a i the sum from i equals one to n a i / the sum as i runs from 1 to n of the a i

　　4. Linear algebra

　　‖ x ‖ the norm (or modulus) of x

　　OA → OA / vector OA

　　OA ¯ OA / the length of the segment OA

　　A T A transpose / the transpose of A

　　A −1 A inverse / the inverse of A

　　5. Functions

　　f( x ) fx / f of x / the function f of x

　　f:S→T a function f from S to T

　　x→y x maps to y / x is sent (or mapped) to y

　　f'( x ) f prime x / f dash x / the (first) derivative of f with respect to x

　　f''( x ) f double-prime x / f double-dash x / the second derivative of f with respect to x

　　f'''( x ) triple-prime x / f triple-dash x / the third derivative of f with respect to x

　　f (4) ( x ) f four x / the fourth derivative of f with respect to x

　　∂f ∂ x 1 the partial (derivative) of f with respect to x1

　　∂ 2 f ∂ x 1 2 the second partial (derivative) of f with respect to x1

　　∫ 0 ∞ the integral from zero to infinity

　　lim⁡ x→0 the limit as x approaches zero

　　lim⁡ x→ 0 + the limit as x approaches zero from above

　　lim⁡ x→ 0 − the limit as x approaches zero from below

　　log e y log y to the base e / log to the base e of y / natural log (of) y

　　ln⁡y log y to the base e / log to the base e of y / natural log (of) y
微笑是一种气质，
气质得益于修养，
微笑是一种境界，
境界需要磨练，
尘世中，
受约束的是生命，
不受约束的是心情，
只要心情晴朗，
人生就没有雨天。

[1 楼] 来自: | 发帖时间: 2007/05/14 17:43		 回到顶端

  寻论社区 -> 中学数学 非常解答


Powered by PHPWind Board v1
Copyright © 2003-04 PHPWind		 Processed in 0.064827 second(s),query:4 Gzip enabled
You can contact us