自动化专业英语常用数学符号及表达式_常用数学符号英文

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there exists∃for allp 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 集合(Sets)

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

xAx does not belong to A / x is not an element(or amember)of A ABA 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

B/AA minus B/the difference between A and B

A×B A cro B / the Cartesian product of A and B(A与B的 笛卡尔积)3 实数(Real numbers)

x+1x plus one

x-1x minus one

x±1x plus or minus one

xyxy / x multiplied by y

(x-y)(x+y)x minus y, x plus y

x

x over y y

=the equals sign

x=5x equals 5 / x is equal to 5

x≠5x(is)not equal to 5

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

x>y x is greater than y

x≥y x is greater than or equal to y

x

xy x is le than or equal to y

0

0x1

|x|zero is le than or equal to x is le than or equal to 1 mod x / modulus x

x2 x squared / x(raised)to the power 2

x3x cubedx4x to the fourth / x to the power four xn x to the nth / x to the power nx-n x to the(power)minus n ∑n!(x+y)2xinaii1x2 yxˆn factorial x plus y all squared xi / x subscript i / x suffix i / x sub i the sum from i equals one to n ai / the sum as i runsfrom 1 to n of the ai x over y all squared x hat

x bar ~xx tilde线性代数(Linear algebra)

||x|| the norm(or modulus)of xO OA / vector OA

OA OA / the length of the segment OA

AT A transpose / the transpose of A

A-1 A inverse / the inverse of A

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

f : S→T a function f from S to T

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

f(x)

f(x)

f prime x / f dash x / the(first)derivative of ff double–prime x / f double–dash x / the secondderivative of f with respect to xwith respect to x

f(x)f triple–prime x / f triple–dash x / the third

derivative of f with respect to x

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

ln ylog y to the base e / log to the base e of y /natural log(of)y函数(Functions)

 fthe partial(derivative)of f with respect to x1

x 1

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

∂x12

∞the integral from zero to infinity

lim x→ 0the limit as x approaches zero from above

一、个人简历

Resume

Personal details

1.Name:Qin Fukun2.Age: 203.Date of Birth: December 24,19874.Sex: Male

5.Marital Status: single6.Addre: 349 Hepin Street, Wuhan, Hubei ,430081,7.Tel: 0722-598256398.E-mail:9.Education： 10.Work experience：

11.Honors: 12.Course taken:13.Foreign language:14.References:

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