数学公式的英文读法

数学公式的英文读法

&

数学英文词汇

?

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

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

xyxy / 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

| x | mod x / modulus x

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

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

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

-

证明题

(

站内联系

TA)

一般词汇

数学

mathematics, maths(BrE), math(AmE)

公理

axiom

定理

theorem

计算

calculation

运算

operation

证明

prove

假设

hypothesis, hypotheses(pl.)

命题

proposition

算术

arithmetic

加

plus(prep.), add(v.), addition(n.)

被加数

augend, summand

加数

addend

和

sum

减

minus(prep.), subtract(v.), subtraction(n.)

被减数

minuend

减数

subtrahend

差

remainder

乘

times(prep.), multiply(v.), multiplication(n.)

被乘数

multiplicand, faciend

乘数

multiplicator

积

product

除

divided by(prep.), divide(v.), division(n.)

被除数

dividend

除数

divisor

商

quotient

等于

equals, is equal to, is equivalent to

大于

is greater than

小于

is lesser than

大于等于

is equal or greater than

小于等于

is equal or lesser than

运算符

operator

数字

digit

数

number

自然数

natural number

整数

integer

小数

decimal

小数点

decimal point

分数

fraction

分子

numerator

分母

denominator

比

ratio

正

positive

负

negative

零

null, zero, nought, nil

十进制

decimal system

二进制

binary system

十六进制

hexadecimal system

权

weight, significance

进位

carry

截尾

truncation

四舍五入

round

下舍入

round down

上舍入

round up

有效数字

significant digit

无效数字

insignificant digit

代数

algebra

公式

formula, formulae(pl.)

单项式

monomial

多项式

polynomial, multinomial

系数

coefficient

未知数

unknown, x-factor, y-factor, z-factor

等式，方程式

equation

一次方程

simple equation

二次方程

quadratic equation

三次方程

cubic equation

四次方程

quartic equation

不等式

inequation

阶乘

factorial

对数

logarithm

指数，幂

exponent

乘方

power

二次方，平方

square

三次方，立方

cube

四次方

the power of four, the fourth power

n

次方

the power of n, the nth power

开方

evolution, extraction

二次方根，平方根

square root

三次方根，立方根

cube root

四次方根

the root of four, the fourth root

n

次方根

the root of n, the nth root

集合

aggregate

元素

element

空集

void

子集

subset

交集

intersection

并集

union

补集

complement

映射

mapping

函数

function

定义域

domain, field of definition

值域

range

常量

constant

变量

variable

单调性

monotonicity

奇偶性

parity

周期性

periodicity

图象

image

数列，级数

series

微积分

calculus

微分

differential

导数

derivative

极限

limit

无穷大

infinite(a.) infinity(n.)

无穷小

infinitesimal

积分

integral

定积分

definite integral

不定积分

indefinite integral

有理数

rational number

无理数

irrational number

实数

real number

虚数

imaginary number

复数

complex number

矩阵

matrix

行列式

determinant

几何

geometry

点

point

线

line

面

plane

体

solid

线段

segment

射线

radial

平行

parallel

相交

intersect

角

angle

角度

degree

弧度

radian

锐角

acute angle

直角

right angle

钝角

obtuse angle

平角

straight angle

周角

perigon

底

base

边

side

高

height

三角形

triangle

锐角三角形

acute triangle

直角三角形

right triangle

直角边

leg

斜边

hypotenuse

勾股定理

Pythagorean theorem

钝角三角形

obtuse triangle