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以下总结常见数学符号、数字以及函数的英文说法、读法

提问于: 04-17-2022
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希腊字母

大写 小写 英文 音标 中文
\(\Alpha\) \(\alpha\) alpha /'ælfə/ 阿尔法(“埃”音更合适)
\(\Beta\) \(\beta\) beta /'bi:tə/ 贝塔(“逼塔”发音更合适)
\(\Gamma\) \(\gamma\) gamma /'gæmə/ 伽玛
\(\Delta\) \(\delta\) delta /'deltə/ 德尔塔
\(\Epsilon\) \(\epsilon\) or \(\varepsilon\) epsilon /'epsilən/ 埃普西隆
\(\Zeta\) \(\zeta\) zeta /'ziːtə/ z-塔
\(\Eta\) \(\eta\) eta /'iːtə/ 埃塔
\(\Theta\) \(\theta\) theta /'θiːtə/ 西塔
\(\Iota\) \(\iota\) iota /aɪ'əʊtə/ 埃欧塔
\(\Kappa\) \(\kappa\) or \(\varkappa\) kappa /'kæpə/ 卡帕
\(\Lambda\) \(\lambda\) lamda /'læmdə/ 拉姆达
\(\Mu\) \(\mu\) mu /'mjuː/
\(\Nu\) \(\nu\) nu /'njuː/ 同"妞"
\(\Xi\) \(\xi\) xi /'ksaɪ/ 克赛
\(\Omicron\) \(\omicron\) omicron /'əʊmɪkrən/ 奥密克戎
\(\Pi\) \(\pi\) or \(\varpi\) pi /'paɪ/
\(\Rho\) \(\rho\) or \(\varrho\) rho /'rəʊ/ 同"肉"
\(\Sigma\) \(\sigma\) or \(\varsigma\) sigma /'sɪgmə/ 西格玛
\(\Tau\) \(\tau\) tau /'tɑʊ/
\(\Upsilon\) \(\upsilon\) upsilon /'jʊpsɪlən/ 埃普西隆
\(\Phi\) \(\phi\) phi /'faɪ/ fai
\(\Chi\) \(\chi\) chi /'kaɪ/
\(\Psi\) \(\psi\) psi /'psaɪ/
\(\Omega\) \(\omega\) omega /'əʊmɪgə/ 欧米伽

符号及部分函数名称

符号 英文
\(+\) plus
\(-\) minus
\(\pm\) plus or minus 减价
\(\times\) multiplied by 乘以
\(/\) over; divided by 除以
\(÷\) divided 除以
\(=\) equals 等于
\(\approx\) approximately, similar 近似于,与……相似
\(\equiv\) equivalent to; identical 等价于,等于
\(\neq\) not equal to 不等于
\(\gt\) greater than 大于
\(\lt\) less than 小于
\(\geq\) greater than or equal to 大于等于
\(\leq\) less than or equal to 小于等于
\(\ngtr\) not greater than 不大于
\(\nless\) not less than 不小于
\(\gg\) much greater than 远大于
\(\ll\) much less than 远小于
perpendicular to 垂直于
∣∣ parallel to 平行于
\(\not\equiv\) not equivalent to, not identical to 不等价于,不等于
\(\not \approx\) not similar to 与……不相似
\({}^2\) squared 平方
\({}^3\) cubed 立方
\({}^4\) to the fourth; to the power four 四次幂
\({}^n\) to the n; to the nth; to the power n n次幂
\(\sqrt{}\) root; square root 平方根
\(\sqrt[3]{}\) cube root 立方根
\(\sqrt[4]{}\) fourth root 四次根
\(!\) factorial 阶乘
% percent 百分之
\(\infty\) infinity 无穷
\(\propto\) varies as;proportional to 随……变化,与……成比例
\(\cdot\) dot
\(\ddot{}\) double dot 双点
\(:\) is to, ratio of
f(x) fx f; function 函数
f'(x) f dash; derivative 导数
f''x f double-dash; second derivative 二阶导数
f'''x riple-dash; f treble-dash; third derivative 三阶导数
\(f^{(4)}\) f four; fourth derivative 四阶导数
\(\partial\) derivative, delta 偏导数
\(\int\) integral 积分
\(\sum\) sum
\(w.r.t.\) with respect to 对……,相对于……
\(\log\) log 对数函数
\(\log_2 x\) log to the base 2 of x 以2为底的对数函数
\(\because\) because 因为
\(\therefore\) therefore 所以
\(\to\) gives, leads to, approaches 得,导致,趋近于
\(/\) per
\(\in\) belongs to; a member of;  an element of 属于
\(\notin\) does not belong to; is not a member of; is not an element of 不属于
\(\subset\) contained in; a proper subset of 包含
\(\subseteq\) contained in; subset 包含于……,……的子集
\(\cap\) intersection 交集
\(\cup\) union 并集
\(\forall\) for all 对所有……
\(\cos x\) cos x; cosine x /kɒz/
\(\sin x\) sine x /saɪn/
\(\tan x\) tangent x /tan/
\(\cosec x\) cosec x /'kəʊsek/
\(\sinh x\) shine x /'ʃaɪn/
\(\cosh x\) cosh x /'kɒʃ/
\(\tanh x\) than x /θæn/
\(\|x\|\) mod x; modulus x
degrees Centigrade 摄氏度
degrees Fahrenheit 华氏度
°K degrees Kelvin 凯氏度
0°K, –273.15 °C absolute zero 绝对零度
mm millimetre 毫米
cm centimetre 厘米
cc, cm³ cubic centimetre, centimetre cubed 立方厘米
m metre
km kilometre 千米
mg milligram 毫克
g gram 克/
kg kilogram 千克
AC A.C. /eɪ si:/
DC D.C. /di: si:/

公式

表达式 英文 中文
\(x +1\) x plus one x加1
\(x-1\) x minus one x减一
\(x \pm 1\) x plus orminus one x加减1
\(xy\) x y;x times y; x multiplied by y xy
\((x-y)(x + y)\) x minus y, x plus y x减y乘x加y
\(x/y\) x over y; x divided by y; x除以y
\(x ÷ y\) x divided by y x除以y
\(x = 5\) x equals 5;  x is equal to 5 x等于5
\(x \approx y\) x is approximately equal to y x约等于y
\(x ≡ y\) x is equivalent to y; x is identical with y x等价于y,x恒等于y
\(x \neq y\) x is not equal to y x不等于y
\(x > y\) x is greater than y x大于y
\(x < y\) x is less than y x小于y
\(x ≥ y\) x is greater than or equal to y x大于等于y
\(x ≤ y\) x is less than or equal to y x小于等于y
\(0 < x < 1\) zero is less than x is less than 1; x is greater than zero and less than 1 x大于0,小于1
\(0 ≤ x ≤ 1\) zero is less than or equal to x is less than or equal to 1; x is greater than or equal to zero and less than or equal to 1 x大于等于0,小于等于1
\(x^2\) x squared x的平方
\(x^3\) x cubed x的立方
\(x^4\) x to the fourth;  x to the power four x的四次幂
\(x^n\) x to the n; x to the nth; x to the power n x的n次幂
\(x^{-n}\) x to the minus n; x to the power of minus n x的负n次幂
\(\sqrt{}\) root x; square root x; the square root of x x的平方根
\(\sqrt[3]{}\) the cube root of x x的立方根
\(\sqrt[4]{}\) the fourth root of x x的四次根
\(\sqrt[n]{}\) the nth root of x x的n次根
\((x + y)^2\) x plus y all squared x加y整体的平方
\((x/y)^2\) x over y all squared y分之x整体的平方
\(n!\) n factorial; factorial n n的阶乘
x% x percent 百分之x
\(\infty\) infinity 无穷
\(x \propto y\) x varies as y; x is (directly) proportional to y x与y成比例
\(x \propto 1/y\) x varies as one over y; x is indirectly proportional to y x与1/y成比例
\(\dot{x}\) x dot 点x
\(\ddot{x}\) x double dot 双点x
\(f(x) \quad fx\) f of x; the function of x x的函数
f'(x) f dash x; the (first) derivative of with respect to x 函数f对x的导数
f''x f double-dash x; the second derivative of f with respect to x 函数f对x的二阶导数
f'''(x) f triple-dash x; f treble-dash x; the third derivative of f with respect to x 函数f对x的三阶导数
f(4) f four x; the fourth derivative of f with respect to x 函数f对x的四阶导数
\(\partial v\) the partial derivative of v v的偏微分
\(\frac{\partial v}{\partial \theta}\) delta v by delta theta, the partial derivative of v with respect to θ v对于θ的偏导数
\(\frac{\partial^2 v}{\partial \theta^2}\) delta two v by delta theta squared; the second partial derivative of v with respect to θ v对于θ的二阶偏导数
\(\text{d}v\) the derivative of v v的导数
\(\frac{\text{d}v}{\text{d} \theta}\) d v by d theta, the derivative of v with respect to theta v对于θ的导数
\(\frac{\text{d}^2 v}{\text{d} \theta^2}\)d d 2 v by d theta squared, the second derivative of vwith respect to theta, v对于θ的二阶导数
\(\int\) integral 积分
\(\int_0^{\infty}\) integral from zero to infinity 从0到正无穷的积分
\(\sum\) sum
\(\sum_{i=1}^n\) the sum from i equals 1 to n 从i=1到i=n进行求和
\(w.r.t.\) with respect to 相对于
\(\log_e y\) or \(\ln\) log to the base \(e\) of y; log y to the base \(e\); natural log (of) y y的自然对数
\(\because\) because 因为
\(\therefore\) therefore 所以
\(\to\) gives, approaches 得,趋近
\(\Delta x \to 0\) delta x approaches zero \(\Delta x\)趋近于0
\(lim_{\Delta x \to 0}\) the limit as delta x approaches zero, the limit as delta x tends to zero \(\Delta x\)趋近于0时的极限
\(Lt_{\Delta x \to 0}\) the limit as delta x approaches zero, the limit as delta x tends to zero \(\Delta x\)趋近于0时的极限
m/sec metres per second 米每秒
\(x \in A\) x belongs to A; x is a member of A; x is an element of A x属于集合A,x在集合A中
\(x \notin A\) x does not belong to A; x is not  a member of A; x is not an element of A x不属于集合A
\(A \subset B\) A is contained in B; A is a proper subset of B B包含A,A是B的真子集
\(A \subseteq B\) A is contained in B; A is a subset of B B包含A,A是B的子集
\(A \cap B\) A intersection B A与B的交集
\(A \cup B\) A union B A与B的并集
\(\cos x\) cos x; cosine x 余弦
\(\sin x\) sine x 正弦
\(\tan x\) tangent x, tan x 正切
\(\cosec x\) or \(\csc x\) cosec x 余割
\(\sinh x\) shine x 双曲正弦
\(\cosh x\) cosh x 双曲余弦
\(\tanh x\) than x 双曲正切
\(\|x\|\) mod x; modulus x x的模
18 ℃ eighteen degrees Centigrade 18摄氏度
70 ℉ seventy degrees Fahrenheit 70华氏度

参考

回答于:04-17-2022
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