常用的数学符号和公式的读法

1、常用的数学符号和公式的读法1 逻辑逻辑(Logic) for allp q if p, then qpq p if and only if q 数学公式的读法数学公式的读法(Pronunciation of mathematical expressions)2 集合集合(Sets) xA x belongs to AxA x does not belong to A AB A is a subset of BABB is a subset of A ABA cap BABA cup B3 实数(Real numbers) x+1x plus onex-1x minus onex1x plus

2、or minus onexyxy / x multiplied by y x over yx=5x equals 5 / x is equal to 5x5x (is) not equal to 5yx3 实数(Real numbers) xyx is greater than yxyx is greater than or equal to yx yx is less than yx yx is less than or equal to y0 x1zero is less than x is less than 10 x 1 zero is less than or equal to x

3、is less than or equal to 1|x|mod x / modulus xx2x squared / x (raised) to the power 2x3x cubed; the third power of xx4 x to the fourth / x to the power fourxn x to the nth / x to the power nx-n x to the (power) minus n3 实数(Real numbers) n! n factorial(x+y)2 x plus y all squared the sum from i equals

4、 one to n aix over y all squaredniia12yx:():():3nxab a is proportional to b1aa is inversely proportional to bbaa approaches the limit plus minus infinityasquare root of aacube root of aa nth root of aeexponential function of x 4 函数函数(Functions) f(x)fx / f of x / the function f of x f : STa function

5、f from S to Tx maps to yf (x) f prime xf (x)f doubleprime xf (x)f tripleprime xf f (x) the fourth derivative of f with respect to xyx ( ):,:ba22f x dx integral of the function of x between the limits a and bdouble integral oftriple integral ofn fold integral ofdyderivative of y respect to xdxypartia

6、l derivative of y respect to xxd ysecond derivativedx :,:,nii 1nii 1of y respect to xXsummation of x sub i where i goes from 1 to nXproduct of x sub i where i goes from 1 to n 常量:constant 变变量：variable 极极限：limit 无穷穷大：infinity 无穷穷小：infinitesimal 极极大：maximum 极极小：minimum 微分：differential 积积分：integral 导数导数：derivative 特解：particular/special solution 通解：general solution 全解：complete solution 矩阵阵：matrix 行矩阵阵： row matrix 列矩阵阵：column matrix 单单位阵阵：unit matrix 对对角阵阵：diagonal matrix 逆矩阵阵：inverse matrix 转转置矩