第一篇:常用數(shù)學(xué)符號(hào)大全
常用數(shù)學(xué)符號(hào)大全
1、幾何符號(hào)
? ∥ ∠ ? ? ≡ ≌ △
2、代數(shù)符號(hào)
∝ ∧ ∨ ~ ∫ ≠ ≤ ≥ ≈ ∞ ∶
3、運(yùn)算符號(hào)
如加號(hào)(+),減號(hào)(-),乘號(hào)(×或·),除號(hào)(÷或/),兩個(gè)集合的并集(∪),交集(∩),根號(hào)(√),對(duì)數(shù)(log,lg,ln),比(:),微分(dx),積分(∫),曲線積分(∮)等。
4、集合符號(hào)
∪ ∩ ∈
5、特殊符號(hào)
∑ π(圓周率)
6、推理符號(hào)
|a| ? ? △ ∠ ∩ ∪ ≠ ≡ ± ≥ ≤ ∈ ←
↑ → ↓ ↖ ↗ ↘ ↙ ∥ ∧ ∨
&;§
? ? ? ? ? ? ? ? ? ?
Γ Δ Θ Λ Ξ Ο Π Σ Φ Χ Ψ Ω
α β γ δ ε δ ε ζ η θ ι κ λ
μ ν π ξ ζ η υ θ χ ψ ω
Ⅰ Ⅱ Ⅲ Ⅳ Ⅴ Ⅵ Ⅶ Ⅷ Ⅸ Ⅹ Ⅺ Ⅻ
ⅰ ⅱ ⅲ ⅳ ⅴ ⅵ ⅶ ⅷ ⅸ ⅹ
∈ ∏ ∑ ∕ √ ∝ ∞ ∟ ∠ ∣ ∥ ∧ ∨ ∩ ∪ ∫ ∮
∴ ∵ ∶ ∷ ? ≈ ≌ ≒ ≠ ≡ ≤ ≥ ≦ ≧ ≮ ≯ ⊕ ? ?
? ? ℃
指數(shù)0123:o123
7、數(shù)量符號(hào)
如:i,2+i,a,x,自然對(duì)數(shù)底e,圓周率π。
8、關(guān)系符號(hào)
如“=”是等號(hào),“≈”是近似符號(hào),“≠”是不等號(hào),“>”是大于符號(hào),“<”是小于符號(hào),“≥”是大于或等于符號(hào)(也可寫作“≮”),“≤”是小于或等于符號(hào)(也可寫作“≯”)?!啊?”表示變量變化的趨勢(shì),“?”是相似符號(hào),“≌”是全等號(hào),“∥”是平行符號(hào),“?”是垂直符號(hào),“∝”是成正比符號(hào),(沒有成反比符號(hào),但可以用成正比符號(hào)配倒數(shù)當(dāng)作成反比)“∈”是屬于符號(hào),“??”是“包含”符號(hào)等。
9、結(jié)合符號(hào)
如小括號(hào)“()”中括號(hào)“[]”,大括號(hào)“{}”橫線“—”
10、性質(zhì)符號(hào)
如正號(hào)“+”,負(fù)號(hào)“-”,絕對(duì)值符號(hào)“| |”正負(fù)號(hào)“±”
11、省略符號(hào)
如三角形(△),直角三角形(Rt△),正弦(sin),余弦(cos),x的函數(shù)(f(x)),極限(lim),角(∠),∵因?yàn)?,(一個(gè)腳站著的,站不?。?/p>
∴所以,(兩個(gè)腳站著的,能站?。┛偤停ā疲?,連乘(∏),從n個(gè)元素中每次取出r個(gè)元素所有不同的組合數(shù)(C(r)(n)),冪(A,Ac,Aq,x^n)等。
12、排列組合符號(hào)
C-組合數(shù)
A-排列數(shù)
N-元素的總個(gè)數(shù)
R-參與選擇的元素個(gè)數(shù)
!-階乘,如5!=5×4×3×2×1=120 C-Combination-組合A-Arrangement-排列
第二篇:數(shù)學(xué)符號(hào)
幾何符號(hào)
?
‖
∠
?
?
≡
≌
△ 代數(shù)符號(hào)
∝
∧
∨
~
∫
≠
≤
≥
≈
∞
∶
3運(yùn)算符號(hào)
×
÷
√
±
4集合符號(hào)
∪
∩
∈
5特殊符號(hào)
∑
π(圓周率)
6推理符號(hào)
|a|
?
?
△
∠
∩
∪∈
←
↑
→
↓
↖
↗
↘
↙
&;
§
?
?
?
?
?
?
?
?
Γ
Δ
Θ
∧
Ξ
Ο
∏
α
β
γ
δ
ε
δ
ε
ζ
μ
ν
π
ξ
ζ
η
υ
θ
Ⅰ Ⅱ Ⅲ Ⅳ Ⅴ Ⅵ Ⅶ Ⅷ Ⅸ Ⅹ Ⅺ Ⅻ
ⅰ ⅱ ⅲ ⅳ ⅴ ⅵ ⅶ ⅷ ⅸ ⅹ
∈
∏
∑
∕
√
∝
∞
∟ ∠
∫
∮
≠
≡ ‖
∧ ?
? ∑
Φ η
θ
χ
ψ ∣
‖
±
≥
≤
∨
Χ
Ψ
Ω ι
κ
λ
ω
∨
∩
∪
∧
∴
∵
∶
∷
?
≈
≌
≈
≠
≡
≤
≥
≤
≥
≮
≯
⊕
?
?
⊿
?
℃
指數(shù)0123:o123
上述符號(hào)所表示的意義和讀法(中英文參照)
+
plus 加號(hào);正號(hào)
-
minus 減號(hào);負(fù)號(hào)
±
plus or minus 正負(fù)號(hào)
×
is multiplied by 乘號(hào)
÷
is divided by 除號(hào)
=
is equal to 等于號(hào)
≠ is not equal to 不等于號(hào)
≡ is equivalent to 全等于號(hào)
≌ is approximately equal to 約等于
≈ is approximately equal to 約等于號(hào)
<
is less than 小于號(hào)
>
is more than 大于號(hào)
≤ is less than or equal to 小于或等于
≥ is more than or equal to 大于或等于
%
per cent 百分之…
∞ infinity 無限大號(hào)
√(square)root平方根
X squared X的平方
X cubed X的立方
∵ since;because 因?yàn)?/p>
∴ hence 所以
∠ angle 角
? semicircle 半圓
? circle 圓
○ circumference 圓周
△ triangle 三角形
? perpendicular to 垂直于
∪ intersection of 并,合集
∩ union of 交,通集
∫ the integral of …的積分
∑(sigma)summation of 總和
°
degree 度
′ minute 分
〃
second 秒
#
number …號(hào)
@ at 單價(jià)
第三篇:數(shù)學(xué)符號(hào)英語翻譯
1.Logic ? ? 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 2.Sets 集合
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-1 x±1 xy x plus one x minus one x plus or minus one xy / x multiplied by y
x minus y, x plus y(x-y)(x+y)= x=5 x≠5 the equals sign
x equals 5 / x is equal to 5 x(is)not equal to 5
x≡y x is equivalent to(or identical with)y x>y x≥y x x is greater than or equal to y x is less than y x≤y x is less than or equal to y zero is less than x is less than 1 zero is less than or equal to x is less than or equal to 1 0 x squared / x(raised)to the power 2 x cubed x to the fourth / x to the power 4 x to the nth / x to the power n x to the(power)minus n (square)root x / the square root of x cube root(of)x fourth root(of)x nth root(of)x x的三次根 x的四次根 x的n次根 (x+y)2 x plus y all squared n!x^ xˉ x? xi n factorial x hat x bar x tilde xi / x subscript i / x suffix i / x sub i ∑(i=1~n)ai the sum from i equals one to n ai / the sum as i runs from 1 to n of the ai 4.Linear algebra ‖x‖ the norm(or modulus)of x OA→ OA / vector OA 這里應(yīng)該是寫在字母上的一短杠 OAˉ OA / the length of the segment OA 同上,長(zhǎng)杠 AT A?1 A transpose / the transpose of A 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 4應(yīng)該是上角標(biāo) ?f/?x1 the partial(derivative)of f with respect to x1 ?2f/?x12 ∫0∞ the second partial(derivative)of f with respect to x1 the integral from zero to infinity limx→0 the limit as x approaches zero limx→0+ the limit as x approaches zero from above limx→0? the limit as x approaches zero from below logey log y to the base e / log to the base e of y / natural log(of)y lny log y to the base e / log to the base e of y / natural log(of)y 德語中數(shù)學(xué)運(yùn)算,數(shù)學(xué)符號(hào)的讀法寫法常常令很多想去德國(guó)留學(xué)的同學(xué)煩惱。因?yàn)檫@些符號(hào)在字典中無從查起,只有通過在德國(guó)一段時(shí)間學(xué)習(xí),從德語課本中自行總結(jié)。這里我給他家分享一份我自己總結(jié)的運(yùn)算符號(hào)。一些符號(hào)實(shí)在打不出來,只能用圖片代替。歡迎補(bǔ)充^ ^ + plus, positiv — minus, negativ × mal,multipliziert ÷ durch, geteilt, dividiert = gleich, ist ≡ identisch ≠ nicht leich, ungleich ≌ kongruent, deckungsgleich ∽ ?hnlich, proportional ≈ ungef?hr, rund, angen?hert, naheyu gleich ≤ kleiner als oder gleich ≥ gr?sser als oder gleich < kleiner als, weniger als > gr?sser als, mehr als << klein gegen >> gross gegen ∞ unendlich ∑ Sigma, Summe, Summenzeichen Summenzeichen von n bis m 5 ‰ 5 prozent 5 % 5 Promille oder 5 vom Tausend 52 5 hoch 2 a hoch n, a n-te Potenz a hoch minus m Quadratwyrzel aus 25 Kubukwurzel oder dritte Wurzel aus 125()runde Klammern [ ] eckige Klammern { } geschweifte Klammern ⊥ rechtwinklig zu, senkrecht zu ‖ parallel △ABC Dreiecke ABC A⌒B Bogen AB Strecke AB ° Grad ′ Minute ″ Sekunde ∴ weil ∵ folglich sin Sinus cos Kosinus tan, tg Tangens cot, ctg Kotangens sec Sekans, Sekante cosec Konsekans, Kosekante arc sin Arcussinus arc cos arcuscosinus arc tg Arcustangens log Logarithmus lg dekadischer Logariethmus(Basis 10)ln natürlicher Logariethmus(Basis e)lim Limit d Differential Y=f(x)y y ist Funktion von x u(x)u von t y Ableitung erster(zeiter, dritter)Ordnung der Funktion f(x)nach der Ver?derlichen x ∫ Integral Integral innerhalb der Grenzen a und b △f Detal f, Defferenz yweier funtionswerte 數(shù)學(xué)符號(hào)集錦 已知函數(shù)f(x)=1/2x2-(2a+2)x+(2a+1)lnx,對(duì)任意的a∈(3/2,5/2),已知o是銳角ΔABC的外接圓的圓心,且 已知存在實(shí)數(shù)a,滿足對(duì)任意的實(shí)數(shù)b,直線y=-x+b都不是 已知直線tx+y+3=0與圓x2+y2=4相交于A、B兩點(diǎn),若 設(shè)函數(shù)f(x)=ax3+bx2+cx+d是奇函數(shù),且當(dāng)x=-√3/3時(shí),f(x)取得極小值-2√3/9。(1)求函數(shù)f(x)的解析式;(2)求使得方程 已知函數(shù)f(x)=ax2+1,g(x)=x3+bx,其中a>0,b>0 設(shè)f(x)=x3+lg(x+√x2+1),則對(duì)任意實(shí)數(shù)a,b,已知函數(shù)f(x)=x(x-a)(x-b),點(diǎn)A(s,f(s)),點(diǎn)B(t,f(t)),(1)若a=0,b=3 已知函數(shù)f(x)=-x2+2ax,x≤1.f(x)=ax+1,x>1.若存在x1,x2∈R,x1≠x2 設(shè)函數(shù)f(x)=ex-1-x-ax2,若當(dāng)x≧0時(shí),f(x)≧0,求a的取值范圍 若函數(shù)f(x)=ax2+20x+14(a>0)對(duì)任意實(shí)數(shù)t,在閉區(qū)間[t-1,t+1]上總存在兩實(shí)數(shù)x1,x2,使得 設(shè)函數(shù)f(x)=x(1/2)x+1/x+1,A0為坐標(biāo)原點(diǎn),An為函數(shù)y=f(x)的圖像上橫坐標(biāo)為n的點(diǎn) 在平面直角坐標(biāo)系xoy中,設(shè)定點(diǎn)A(a,a),P是函數(shù)y=1/x(x>0)圖像上一動(dòng)點(diǎn),若點(diǎn)P、A之間的最短距離 設(shè)等差數(shù)列{an}的前n項(xiàng)和為sn,且s4=4s2,a2n=2an+1,求數(shù)列{an}的通項(xiàng)公式第四篇:德語數(shù)學(xué)符號(hào)
第五篇:數(shù)學(xué)符號(hào)集錦