常用的数学符号和公式的读法课件

xf( x) y
x maps to y f prime x
f(x)
f double–prime x
f(x)
f triple–prime x
f (x) the fourth derivative of f with respect to x
常用的数学符号和公式的读法
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• 常量:constant
• 变量：variable
常用的数学符号和公式 的读法
常用的数学符号和公式的读法
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数学公式的读法(Pronunciation of mathematical expressions)
1 逻辑(Logic)
for all
p q if p, then q pq p if and only if q
常用的数学符号和公式的读法
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4
3 实数(Real numbers)
x>y
x is greater than y
x≥y
x is greater than or equal to y
x< y
x is less than y
xy
x is less than or equal to y
0<x<1
zero is less than x is less than 1
2 集合(Sets)
xA x belongs to A
xA x does not belong to A
AB AB AB AB
A is a subset of B B is a subset of A A cap B A cup B
常用的数学符号和公式的读法
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3 实数(Real numbers)
n
ai
i1
2
x y
the sum from i equals one to n ai x over y all squared
常用的数学符号和公式的读法
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4 函数(Functions)
f(x)
fx / f of x / the function f of x
f : S→T a function f from S to T
x+1
x plus one
x-1 x±1
x minus one x plus or minus one
xy
xy / x multiplied by y
x over y
5
x≠5
x (is) not equal to 5
常用的数学符号和公式的读法
• 极限：limit
• 无穷大：infinity
• 无穷小：infinitesimal
• 极大：maximum
• 极小：minimum
• 微分：differential
• 积分：integral
• 导数：derivative
• 特解：particular/special solution
• 通解：general solution常用的数学符号和公式的读法
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• 矩阵：matrix
• 行矩阵： row matrix
• 列矩阵：column matrix
• 单位阵：unit matrix
• 对角阵：diagonal matrix
• 逆矩阵：inverse matrix
• 转置矩阵：transposed matrix
• 向量： vector
• 标量： scalar
• 概率： probability
• 随机变量： random variable
• 均值：mean
• 方差：variance 常用的数学符号和公式的读法
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0x1 zero is less than or equal to x is less than or equal to 1
|x|
mod x / modulus x
x2
x squared / x (raised) to the power 2
x3
x cubed; the third power of x
x4
x to the fourth / x to the power four
xn
x to the nth / x to the power n
x-n
x to the (power) minus n
常用的数学符号和公式的读法
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3 实数(Real numbers)
n!
n factorial
(x+y)2 x plus y all squared