数学图标大全图片?运算符号:加号(+),减号(-),乘号(×或·),除号(÷或/),两个集合的并集(∪),交集(∩),根号(√),对数(log,lg,ln),比(:),微分(dx),积分(∫)。关系符号:“=”是等号,“≈”是近似符号,“≠”是不等号,“>”是大于符号,“<”是小于符号,那么,数学图标大全图片?一起来了解一下吧。
运算符号:加号(+),减号(-),乘号(×或·),除号(÷或/),两个集合的并集(∪),交集(∩),根号(√),对数(log,lg,ln),比(:),微分(dx),积分(∫)。
关系符号:“=”是等号,“≈”是近似符号,“≠”是不等号,“>”是大于符号,“<”是小于符号,“→ ”表示变量变化的趋势,“∽”是相似符号,“≌”是全等号,“‖”是平行符号,“⊥”是垂直符号,“∝”是反比例符号,“∈”是属于符号,“C”或“C下面加一横”是“包含”符号。
省略符号:三角形(△),正弦(sin),余弦(cos),x的函数(f(x)),极限(lim),因为(∵),所以(∴),总和(∑),连乘(∏),从n个元素中每次取出r个元素所有不同的组合数(C(r)(n) ),幂(A,Ac,Aq,x^n),阶乘(!)。
点击插入——形状——矩形——按shift键画一个正方形。
请点击输入图片描述
右击正方形——点击大小和属性——在右侧的导航栏中高度和宽度都设置为1厘米——把正方形放置到第一个单元格与左上角对齐。
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点击电子表格左上角三角箭头选择整个表格——然后调整列宽与行高与正方形同样大小。
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删除正方形,点击选择A1单元格——切换至五笔输入法——右击小键盘图标——选择:特殊符号。
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选择黑色实心小圆点插入到A1单元格——点击开始——设置大小为20,选择垂直居中和水平居中。
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最后按住A1单元格右下角向下填充——然后再向右填充,这样点子图就制作好了。
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01:简介
全球最大的软件公司微软
02:常识
微软,开发软件时,收集的资料应算是全面性的,算是够齐全的了
所以以最微软最普及的办公软件WORD应是够客观的
03:材料
微软 OFFICE WORD 软件
04:操作步验如图示
注意事项:提供的截图接口虽为英文(我会加注中文字),但是请参考相同位置及图标即可
看你须要那个符号
自行复制/粘贴
=equals signequality5 = 2+3
5 is equal to 2+3
≠not equal signinequality5 ≠ 4
5 is not equal to 4
≈approximately equalapproximationsin(0.01) ≈ 0.01,
x≈ymeansxis approximately equal toy
>strict inequalitygreater than5 > 4
5 is greater than 4
4 is less than 5 ≥inequalitygreater than or equal to5 ≥ 4, x≥ymeansxis greater than or equal toy ≤inequalityless than or equal to4 ≤ 5, x ≤ ymeansxis less than or equal toy ( )parenthesescalculate expression inside first2 × (3+5) = 16 [ ]bracketscalculate expression inside first[(1+2)×(1+5)] = 18 +plus signaddition1 + 1 = 2 −minus signsubtraction2 − 1 = 1 ±plus - minusboth plus and minus operations3 ± 5 = 8 and -2 ±minus - plusboth minus and plus operations3 ∓ 5 = -2 and 8 *asteriskmultiplication2 * 3 = 6 ×times signmultiplication2 × 3 = 6 ⋅multiplication dotmultiplication2 ⋅ 3 = 6 ÷division sign / obelusdivision6 ÷ 2 = 3 /division slashdivision6 / 2 = 3 —horizontal linedivision / fraction modmoduloremainder calculation7 mod 2 = 1 .perioddecimal point, decimal separator2.56 = 2+56/100 abpowerexponent23= 8 a^bcaretexponent2 ^ 3= 8 √asquare root √a⋅√a= a √9= ±3 3√acube root3√a⋅3√a⋅3√a= a3√8= 2 4√afourth root4√a⋅4√a⋅4√a⋅4√a= a4√16= ±2 n√an-th root (radical)forn=3,n√8= 2 %percent1% = 1/10010% × 30 = 3 ‰per-mille1‰ = 1/1000 = 0.1%10‰ × 30 = 0.3 ppmper-million1ppm = 1/100000010ppm × 30 = 0.0003 ppbper-billion1ppb = 1/100000000010ppb × 30 = 3×10-7 pptper-trillion1ppt = 10-1210ppt × 30 = 3×10-10 ∠angleformed by two rays∠ABC = 30° measured angleABC = 30° spherical angleAOB = 30° ∟right angle= 90°α = 90° °degree1 turn = 360°α = 60° degdegree1 turn = 360degα = 60deg ′primearcminute, 1° = 60′α = 60°59′ ″double primearcsecond, 1′ = 60″α = 60°59′59″ lineinfinite line ABline segmentline from point A to point B rayline that start from point A arcarc from point A to point B= 60° ⊥perpendicularperpendicular lines (90° angle)AC⊥BC | |parallelparallel linesAB| |CD ≅congruent toequivalence of geometric shapes and size∆ABC≅ ∆XYZ ~similaritysame shapes, not same size∆ABC~ ∆XYZ Δtriangletriangle shapeΔABC≅ ΔBCD |x-y|distancedistance between points x and y|x-y| = 5 πpi constantπ= 3.141592654... is the ratio between the circumference and diameter of a circle c=π⋅d= 2⋅π⋅r radradiansradians angle unit360° = 2π rad cradiansradians angle unit360° = 2πc gradgradians / gonsgrads angle unit360° = 400 grad ggradians / gonsgrads angle unit360° = 400g Algebra symbols xx variableunknown value to findwhen 2x= 4, thenx= 2 ≡equivalenceidentical to ≜equal by definitionequal by definition :=equal by definitionequal by definition ~approximately equalweak approximation11 ~ 10 ≈approximately equalapproximationsin(0.01) ≈ 0.01 ∝proportional toproportional to y∝xwheny=kx, kconstant ∞lemniscateinfinity symbol ≪much less thanmuch less than1 ≪ 1000000 ≫much greater thanmuch greater than1000000 ≫ 1 ( )parenthesescalculate expression inside first2 * (3+5) = 16 [ ]bracketscalculate expression inside first[(1+2)*(1+5)] = 18 { }bracesset ⌊x⌋floor bracketsrounds number to lower integer⌊4.3⌋ = 4 ⌈x⌉ceiling bracketsrounds number to upper integer⌈4.3⌉ = 5 x!exclamation markfactorial4! = 1*2*3*4 = 24 |x|single vertical barabsolute value| -5 | = 5 f(x)function of xmaps values of x to f(x)f(x) = 3x+5 (f∘g)function composition(f∘g) (x) =f(g(x))f(x)=3x,g(x)=x-1 ⇒(f∘g)(x)=3(x-1) (a,b)open interval(a,b) = {x|a [a,b]closed interval[a,b] = {x|a≤x≤b}x∈ [2,6] ∆deltachange / difference∆t=t1-t0 ∆discriminantΔ =b2- 4ac ∑sigmasummation - sum of all values in range of series∑xi= x1+x2+...+xn ∑∑sigmadouble summation ∏capital piproduct - product of all values in range of series∏xi=x1∙x2∙...∙xn ee constant/ Euler's numbere= 2.718281828...e= lim (1+1/x)x,x→∞ γEuler-Mascheroni constantγ = 0.5772156649... φgolden ratiogolden ratio constant πpi constantπ= 3.141592654... is the ratio between the circumference and diameter of a circle c=π⋅d= 2⋅π⋅r ·dotscalar producta·b ×crossvector producta×b A⊗Btensor producttensor product of A and BA⊗B inner product [ ]bracketsmatrix of numbers ( )parenthesesmatrix of numbers |A|determinantdeterminant of matrix A det(A)determinantdeterminant of matrix A ||x||double vertical barsnorm ATtransposematrix transpose(AT)ij= (A)ji A†Hermitian matrixmatrix conjugate transpose(A†)ij= (A)ji A*Hermitian matrixmatrix conjugate transpose(A*)ij= (A)ji A-1inverse matrixA A-1=I rank(A)matrix rankrank of matrix Arank(A) = 3 dim(U)dimensiondimension of matrix Arank(U) = 3 Probability and statistics symbols P(A)probability functionprobability of event AP(A) = 0.5 P(A∩B)probability of events intersectionprobability that of events A and BP(A∩B) = 0.5 P(A∪B)probability of events unionprobability that of events A or BP(A∪B) = 0.5 P(A|B)conditional probability functionprobability of event A given event B occuredP(A | B) = 0.3 f(x)probability density function (pdf)P(a≤x≤b) =∫ f(x)dx F(x)cumulative distribution function (cdf)F(x) =P(X≤x) μpopulation meanmean of population valuesμ= 10 E(X)expectation valueexpected value of random variable XE(X) = 10 E(X | Y)conditional expectationexpected value of random variable X given YE(X | Y=2) = 5 var(X)variancevariance of random variable Xvar(X) = 4 σ2variancevariance of population valuesσ2= 4 std(X)standard deviationstandard deviation of random variable Xstd(X) = 2 σXstandard deviationstandard deviation value of random variable XσX=2 medianmiddle value of random variable x cov(X,Y)covariancecovariance of random variables X and Ycov(X,Y) = 4 A ⊅ Bnot supersetset A is not a superset of set B{9,14,28} ⊅ {9,66} 2Apower setall subsets of A empty setØ = { }C = {Ø}