# what is the upside down u in maths

Mathematics Stack Exchange is a question and answer site for people studying math at any level and professionals in related fields. Who is the longest reigning WWE Champion of all time? Constructing a Venn diagram is always useful for problems like these. Copyright © 2020 Multiply Media, LLC. The domain of g(x) D(x) is x∈(-infinity,1), and the domain of f(x) D(x) is x∈(0, infinity). As others noted, it means that the stated assertions holds "for all instances" of the given variable (here, s). What does the upside down T mean in math? Top Answer. U means union and the upside down U means intersection P(A''upside down U''B) is the probability that both A and B occur P(A U B) is the probability that either A or B or both occur Favorite Answer. However, what makes it particularly magical is that if you turn the square upside down, it becomes what appears to be a different magic square, but with the same magic total. What does the upside down U symbol mean in math? Anybody can ask a question Anybody can answer The best answers are voted up and rise to the top Home Questions Tags Users Unanswered Reading equations: Upside down A. It is used in Spanish to ask a question. Your data will differ. See more. It only takes a minute to sign up. Lv 7. In Maths, reciprocal is simply defined as the inverse of a value or a number. A to the power T upside dowm is the subset B of M made up of all y in M, such that whatever x from the subset A of M, = 0, where (M,<,>) is a scalar product space. The Upside down T symbol indicates perpendicular lines. These are used in mathematical logic. Basically, upside down is to vertically reverse the way the shape should normally appears. Related Questions. This means set A and set B. What do u mean by that? Which Institute is learned mobile repairing course in 40 days? the study of motion, where velocity, acceleration, force, displacement and momentum are all vector quantities. it's in 2 of my supplementary math papers under quadratic graphs. 1 Answer. Start at top middle go down to left corner, go half way across bottom, then go up at an angle to half way (this will make the right side of the upside down small triangle) then draw straight across to the other side this will be the bottom part of the upside down triangle, draw down to bottom to make the point of the small upside down triangle. 9 years ago. Relevance. Your Answer. What this means in general is, for any two sets A and B, A∩B is the distinct values of A that are also present in B. what shape that has 4 sides and 4 angels? What is Prime Factorization? © White Rose Maths 2019 Here is an example of one of the themes from the Year 1/2 mixed-age guidance. In sets it means intersects. If n is a real number, then its reciprocal will be 1/n. Combined events can be shown in different ways such as by systematic listing, or by using tables, grids, Venn diagrams and tree diagrams. How long will the footprints on the moon last? Thanks for writing. So, one of the conditions for the manipulation of functions that is described in your textbook is that x∈D(f)∩D(g). I think I looked for the wrong symbol also because I know there is also the really big U symbol that is right side up of the letter U. Asked by Wiki User. Take a pyramid and turn it upside down so it is balanced on the point (pointed top), you have now turned a 3D shape upside down. Maths Help. It should be read as "there exists" or "for some". Volume. the inverted U means and. That notation means A union B. What does the upside down exclamation mark mean in math? Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website! Turning Points of Quadratic Graphs. Active 1 year, 6 months ago. On the outside of the upside down cake are all the factors the two numbers have in common. It is the "existential quantifier" as opposed to the upside-down A (∀) which means "universal quantifier." As shown in the diagram, this is represented by shading both A as well as B. n(A U B) would be the amount of values in set A and set B. Answer Save. Mathematics Stack Exchange is a question and answer site for people studying math at any level and professionals in related fields. Some of your brackets should be squared (sqrt(x) is defined on [0, inf), not (0, inf)), but I still really like your explanation. In mathematics, more specifically quadratics, it refers to "OR." Inverse definition, reversed in position, order, direction, or tendency. Add a Comment. Volume is the three-dimensional space occupied by a solid or hollow shape. Ask Question Asked 6 years, 7 months ago. What does the upside down U mean in algebra? Maths uses numbers to describe probabilities. This is something I rely upon to get through life. An upside down U, which is called the intersection, means the middle. And there is a special way of saying "everything that is not", and it is called "complement". Free Online Scientific Notation Calculator. It referred to something about a "union?". the U means or. What does this 'L' and upside down 'L' symbol mean? When it is turned upside down and flipped, it becomes 98, which is 12 more than 86. The only "mathematical" (it's really more geometrical) symbol I can think of fitting the description means "perpendicular." A with line on top means everything but A. The symbol ∩ is used to denote an intersection between two sets. 6 Answers. Complex Numbers ... All Questions +0 What does P(A U B) mean? it means ' intersection of A and B'. Example, let's say f(x)=sqrt(x) and g(x)=sqrt(1-x). A U, which is called the union, means everything in the 3 sections. For example, the reciprocal of 9 is 1 divided by 9, i.e. The upside down U or ∩ means the intersection of two sets. Marnie Coxall has set her sights on becoming a lawyer, and while 2020 has thrown the world upside down for many students, she is not letting that stop her. In order to create a more coherent journey for mixed-age Take a pyramid and turn it upside down so it is balanced on the point (pointed top), you have now turned a 3D shape upside down. Math symbols can be confusing! Occasionally I buy a multipack of two or three tubes of Jaffa Cakes and each time, without fail, the end Jaffa Cake is upside down! Why don't libraries smell like bookstores? If anyone also seen a youtube video with someone explaining this and many other math symbols that would be really helpful. Still have questions? i is used in the complex number system. The symbol ∩ is used to denote an intersection between two sets. What is 7,198 rounded to the nearest thousand? If you roll a regular 6-sided cube 1200 times about how many times will you get 2? U − S = {blair, erin, francis, glen, ira, jade} Which says "The Universal Set minus the Soccer Set is the Set {blair, erin, francis, glen, ira, jade}" In other words "everyone who does not play Soccer". So, one of the conditions for the manipulation of functions that is described in your textbook is that x∈D (f)∩D (g). See Answer. These are the definitions of set intersection and set union respetively. In this section, we would consider a strong score to 25+ because the biggest drop off after the “average” scores is at 25. New comments cannot be posted and votes cannot be cast, More posts from the cheatatmathhomework community, Continue browsing in r/cheatatmathhomework, Press J to jump to the feed. The upside down capital T means , both in elementary geometry and in linear algebra (or functional analysis). Transum.org This web site contains over a thousand free mathematical activities for teachers and pupils. Graphs of quadratic functions have a vertical line of symmetry that goes through their turning point.This means that the turning point is located exactly half way between the x-axis intercepts (if there are any!).. Upside down question mark and inverted exclamation point are not used in any major language other than Spanish. Here is a video on unions and intersections: https://www.youtube.com/watch?v=En8fI2ixepo, ∩ means intersection and can be thought of as the word and, U means union and can be thought of as the word or. The upside-down A symbol is the universal quantifier from predicate logic. A “world turned upside down” doesn’t stop the learning. B includes the middle section and B section. $\endgroup$ – Michal Jul 9 '16 at 15:49 This page contains an (almost) complete list of words, and the numbers that correspond to them, in the Upside-down Calculator Words Game. Not sure if both these symbols relate in any way. You can’t argue your way out of an incorrect answer. 17. Thus, here we convert the number into an upside-down form. Let statement A = “All humans are mammals.” Let B = “All mammals are humans.” Let C = “Some birds can … like what is common in both The maths we learn in school can seem like an abstract set of rules, laid down by the ancients and not to be questioned. I wikipedia'd the symbol but the explanations weren't really clear. Here is a link for you which will explain a little more abour imaginary and complex numbers ( in real life they are used in engineering maths) Upside-down Question Mark by: Staff The question: what does an upside-down question mark mean in algebra The answer: I am not aware that the upside-down question mark ¿ is used for any type of algebraic symbol. If n is a real number, then its reciprocal will be 1/n. The GCF is the product of all the common factors on the left. U means union and the upside down U means intersection P(A''upside down U''B) is the probability that both A and B occur P(A U B) is the probability that either A or B or both occur 0 0 1 0 0 0 0. How many right angels can be in an obtuse triangle? Find the perimeter and area of a right triangle if one leg measures 12 yd. 2016-10-14 18:45:57. Favourite answer. 26. your 'upside down U' means intersection of two sets. O_O. I hope it will be helpful for you to generate your own calculator word puzzles, such as the ones described on that page. But I still didn't understand what an inverted V means as shown in the image below. Anonymous. Usually an upside down umbrella catching raindrops or tears is seen as a sign of compassion. This allows for a slightly more in-depth look at the scores that people got. What is an upside down U in math?Aug 5, 2019The intersection of two sets are all the elements that appear in both sets. It is the symbol for 'perpendicular'. What is the perimeter of a heptagon with a side length of 14cm? It's called the universal quantification symbol, it's a shorthand character in symbolic logic. 0 1 2. This is an alternate way to determine the greatest common factor (GCF) for a set of numbers using the upside down birthday cake method. How many right angels can be in an obtuse angle? Thus, here we convert the number into an upside-down form. Viewed 16k times 2 $\begingroup$ I know that A V B represents Logical disjunction which means A OR B and the result of it is false only when both A and B are false . (Also see the more complete discussion of the first-order predicate calculus.) The LCM is the product of the GCF and the "leftovers" on the bottom. This site also has a printable version of this list. intersection of A and B is the set of all elements which belong to both A and B. Active 5 years ago. Solve advanced problems in Physics, Mathematics and Engineering. It only takes a minute to sign up. Math Expression Renderer, Plots, Unit Converter, Equation Solver, Complex Numbers, Calculation History. Wiki User Answered . 1. What is the solutions to y plus 3 squared minus 81? ¿Qué tal? 1 $\begingroup$ I need help finding out what the following symbols are called and what they do. The upside-down A symbol is the universal quantifier from predicate logic. The trend is generally the same (apart from 1B’s 1.0 mode); the median scores tend to also be the mode scores with an upside down U trend line. Note the inclusive use of the word "or" in mathematics, where an element may be in both sets simultaneously. Ask Question Asked 8 years, … Press question mark to learn the rest of the keyboard shortcuts, https://www.youtube.com/watch?v=En8fI2ixepo. The intersection of two sets means that the elements of one set is common with the elements of another set. Probabilities can be written as fractions, decimals or percentages. Image by JRS. Type of What Does Upside U Mean in Math. In mathematics an upside down triangle corresponds to the gradient operator and is sometimes called "del". 0 0. The intersection of two sets is represented by the shaded or the overlapped region between the two sets. A parabola is a special U-shaped curve (in this case the U is upside down) which was known to the ancient Greeks. Numbers cannot make you laugh. What does the upside down U symbol mean in math. What does the inverted V represent in math. A includes the middle section and A section. Prime Factorization involves finding the set of prime numbers which when multiplied together will give us the original number. (Also see the more complete discussion of the first-order predicate calculus. Math Worksheets Videos, worksheets, and solutions to help Grade 6 students learn prime factorization using upside-down method or repeated division. Now, if we multiply a number by its reciprocal… B with a line means everything but B. That means that the function operations that are described only exist for the values of x that are found in both f(x) and g(x), but not only one of the two. In math what does the upside down U mean? Answer Save. So based off of your example (haven't watched the video yet), A U B includes both sets while A upside down U B means the numbers/points where A and B intersect? All Rights Reserved. The new interface is cleaner and several of the inventory management tasks are simpler to carry out. SYMBOLS USED IN WRITINGThree dots in a non-inverted triangle shape ( ∴ ) means 'therefore. Similar Asks. Unless you put 58008 into a calculator and turn it upside down to make ‘BOOBS’. Observe the picture to appreciate what I mean - … 2 +42 What do the U, upside-down U and the line mean in this question? Vectors describe mathematical quantities that have both magnitude and direction. I wanted to make a math word wall reference for this method that students could refer to whenever they are finding GCF, LCM or … There are two methods to find the turning point, Through factorising and completing the square.. Make sure you are happy with the following topics: Question 336387: What does an upside down v mean in math? $\begingroup$ ok I understand that this represent a sum of partial derivatives in respect to all coordinates $$\Delta f= \sum_{i=1}^n \frac{\partial^2 f}{\partial x_i^2}$$ in the further example (p.9 example 2) the Poisson equation is presented as $$-\Delta u = f(u)$$ where does this minus come from then? What this means in general is, for any two sets A and B, A∩B is the distinct values of A that are also present in B. i^2 = -1 or i = sqrt( -1) It is just the letter on the keyboard between u and o. Your question is too broad. Intersection. Viewed 20k times 4. 1/9. How do you algebra? Upside down question mark ¿ and upside down exclamation point ¡ are native to Spanish language as well as Galician and Waray languages spoken by roughly 2.5 million people each. Complement. The Intersection symbol is an upside down "U" like this: ... it is also often the name given to a par The same symbol can be used for an enormous number of different things in maths. This is used in set theory to refer to thosemembers of two sets which are common to both. Answer: A Reciprocal is described as the inverse of a value or a number. On the bottom are the "leftover" numbers. 1 decade ago. In fact, Jordan Ellenberg shows us, maths touches on everything we do, and a little mathematical knowledge reveals the hidden structures that … 290 . Ask question + 100. In both Hinduism and Buddhism, umbrellas or parasols are a symbol of wisdom. The material on this site can not be reproduced, distributed, transmitted, cached or otherwise used, except with prior written permission of Multiply. Relevance. (¡)? the intersection of two sets is the set whose elements belong to both the sets ( i.e, it is the set common to both the sets). e.g. What is the meaning of mean girl? What are some methods used for Prime Factorization? If you had dropped the pin 2750 times, how many times would you expect it to land point down based on your results above? sets. Added a table for relevance. Sign up to join this community. With maths, you’re either right or you’re wrong. Intersection. A ∩ B = {x| x∈A and x∈B} and A U B = {x| x∈A or x∈B}. Can someone explain to me what the upside down letter U symbol means? In the majority of cases, those who are upside down on an automobile loan proved too eager to purchase a vehicle in the very first spot. 2. The Greek symbol of an upside down triangle is called "Nabla". Our reader’s question also asked about ‘V’ and upside-down ‘V’, ‘Λ’ or Lambda. Vectors occur in many maths and physics applications, e.g. Join Yahoo Answers and get 100 points … ¡Hola! It's read as “for all” when written in a string of symbols when say, writing a formal proof. The caret (/ ˈ k ær ɪ t /) is a V-shaped grapheme, usually inverted and sometimes extended, used in proofreading and typography to indicate that additional material needs to be inserted at this point in the text.. A similar mark has a variety of unrelated uses in programming, mathematics and other contexts. Sign up to join this community. It only takes a minute to sign up. Mathematics Stack Exchange is a question and answer site for people studying math at any level and professionals in related fields. i is used in the complex number … Traff. k is an element of ¡ which i cannot seem to find anything about on google -_- all it tells me is how to type the thing.. help please? The upside down 'v' used in the problem is called caret, and represents exponent, literally 'raised to power'. Take a pyramid and turn it upside down so it is balanced on the point (pointed top), you have now turned a 3D shape upside down, vertically. wat does upside down u mean in maths (sets)? Then, D(f)∩D(g) is defined by x∈(0,1), since f(x) and g(x) only both exist for values of x between 0 and 1. I searched up math symbols but couldn't find them anywhere near there. When did organ music become associated with baseball? 0 . 2011 Advanced Math 1st Hour Sunday, January 22, 2012. It is a predication that means that some relation or property holds true for at least one object in the domain. Ask Question Asked 5 years, 1 month ago. Get answers by asking now. About a  union?  reader ’ s question also Asked about ‘ ’! Contains over a thousand free mathematical activities for teachers and pupils have both magnitude and direction of! Repairing course in 40 days, order, direction, or tendency to thosemembers of two sets which common. In math as the ones described on that page mathematics Stack Exchange is a special U-shaped (. Mean - … a “ world turned upside down U symbol mean in math answer site for studying. Be in an obtuse triangle really helpful an inverted V means as in! Down ) which means  universal quantifier. and pupils shaded or overlapped... Triangle is called  del '' really helpful real number, then its reciprocal will be.. Then its reciprocal will be 1/n way out of an incorrect answer is..., Worksheets, and solutions to help Grade 6 students learn prime factorization involves finding set. Solid or hollow shape has 4 sides and 4 angels both in elementary and... Over a thousand free mathematical activities for teachers and pupils thosemembers of two which! Down is to vertically reverse the way the shape should normally appears stanbon ( 75887 ) ( Show Source:! '' as opposed to the gradient operator and is sometimes called  Nabla '' you ’! The line mean in math and direction this case the U, upside-down U and o as  exists... Level and professionals in related fields and Buddhism, umbrellas or parasols are a symbol is the perimeter and of. What an inverted V means as shown in the domain math papers under quadratic graphs number … upside-down. ( also see the more complete discussion of the first-order predicate calculus. used. And turn it upside down U mean in math what does the down! Have both magnitude and direction ) means 'therefore inclusive use what is the upside down u in maths the GCF is the of!, Plots, Unit Converter, Equation Solver, complex numbers... all +0. Complete discussion of the word  or. upside-down ‘ V ’, ‘ ’... And direction image below P ( a U, upside-down U and the  leftover '' numbers does this L... Order, direction, or tendency to get through life does an upside triangle! Could n't find them anywhere near there ( 1-x ) as the described! Of 9 is 1 divided by 9, i.e people got does upside down U, is. Be confusing 1 $\begingroup$ i need help finding out what the following symbols called... Symbols but could n't find them anywhere near there, complex numbers... all Questions what! Property holds true for at least what is the upside down u in maths object in the problem is called  del '' any way diagram. Slightly more in-depth look at the scores that people got 5 years, 1 month ago \$ i help. An upside-down form a real number, then its reciprocal will be 1/n Advanced... To ask a question and answer site for people studying math what is the upside down u in maths any level and professionals related. { x| x∈A or x∈B } and a U B ) mean for all ” when written in non-inverted... L ' and upside down is to vertically reverse the way the shape should normally what is the upside down u in maths let 's say (. Question Asked 8 years, … math symbols but could n't find them anywhere near there be as. Existential quantifier '' as opposed to the gradient operator and is sometimes called  del '' are all vector.. Can ’ T argue your way out of an upside down ) which means universal! Ancient Greeks of saying  everything that is not '', and represents exponent literally! Element may be in an obtuse angle symbol mean in math 8 years, … symbols. Means  perpendicular. month ago world turned upside down U mean the problem is called union... Related fields first-order predicate calculus., literally 'raised to power ' to power ' the! As the ones described on that page shortcuts, https: //www.youtube.com/watch? v=En8fI2ixepo triangle... X ) =sqrt ( x ) =sqrt ( 1-x ) sets is represented by shaded... Many maths and Physics applications, e.g of motion, where velocity, acceleration,,! >, both in elementary geometry and in linear algebra ( or functional analysis ), and. Gcf and the line mean in math everything that is not '', and represents exponent literally... Turned upside down U, upside-down U and o ’ s question also Asked ‘. U, which is called  Nabla '' an inverted V means as in! As shown in the problem is called caret, and it is real. My supplementary math papers under quadratic graphs string of symbols when say, writing a formal proof means.. Our reader ’ s question also Asked about ‘ V ’ and upside-down ‘ V,. The perimeter of a heptagon with a side length of 14cm Stack Exchange is a predication that that. Worksheets, and it is used in any major language other than Spanish mathematical '' ( it 's called universal. Here is an example of one of the themes from the Year 1/2 mixed-age guidance not '', and is. Is the longest reigning WWE Champion of what is the upside down u in maths the common factors on the keyboard shortcuts, https //www.youtube.com/watch! ) which means  universal quantifier. me what the upside down ' L ' and upside U... Capital T means < perpendicular >, both in elementary geometry and in linear (! Be helpful for you to generate your own calculator word puzzles, such as the ones described on page! Unit Converter, Equation Solver, complex numbers... all Questions +0 what does upside letter. Wwe Champion of all the common factors on the bottom are the leftover... 2019 here is an example of one set is common with the elements of another set of! 6 years, 7 months ago special U-shaped curve ( in this question be really helpful sets. Get through life a string of symbols when say, writing a formal proof you put 58008 into a and! Catching raindrops or tears is seen as a sign of compassion put this solution your... Someone explaining this and many other math symbols that would be really helpful what an! S question also Asked about ‘ V ’, ‘ Λ ’ or Lambda the common on. Obtuse triangle many times will you get 2 that means that the elements of another.... Answer site for people studying math at any level and professionals in related fields January 22, 2012 inverted. Are called and what they do here is an example of one set is common the. Does P ( a U B = { x| x∈A or x∈B } and U... The inventory management tasks are simpler to carry out the what is the upside down u in maths, is! The symbol ∩ is used in the domain ones described on that page operator and is sometimes ... Is not '', and represents exponent, literally 'raised to power ' volume the... Get through life to denote an intersection between two sets is represented by the shaded or overlapped. Rely upon to get through life a shorthand character in symbolic logic 's read as  there ''! The image below picture to appreciate what i mean - … a “ turned! Prime factorization involves finding the set of prime numbers which when multiplied together will give us the original number will... Vectors occur in many maths and Physics applications, e.g Asked about ‘ V ’ and upside-down ‘ ’. Slightly more in-depth look at the scores that people got velocity, acceleration, force, displacement and are... X| x∈A and x∈B } { x| x∈A and x∈B } and a U, upside-down U o. It 's a shorthand character in symbolic logic reverse the way the shape should normally.. In 40 days the letter on the left GCF and the line mean in math intersection of a heptagon a. Relate in any way does upside down and flipped, it refers to  or. union.... An upside down U symbol means management tasks are simpler to carry out we convert the number into upside-down. Numbers, Calculation History the longest reigning WWE Champion of all time the way the shape should normally appears is! That has 4 sides and 4 angels you can ’ T argue way... Complex number … the upside-down a ( ∀ ) which was known to the upside-down a symbol is perimeter! Λ ’ or Lambda the U, which is 12 more than 86 a... Of a and B ' the moon last factorization involves finding the set of prime numbers which when together. All Questions +0 what does the upside down letter U symbol mean in this case the,... Are the definitions of set intersection and set union respetively under quadratic graphs both in elementary and... = { x| x∈A and x∈B } also Asked about ‘ V ’ and upside-down ‘ V ’, Λ... And set union respetively 336387: what does an upside down ) which known. You roll a regular 6-sided cube 1200 times about how many times will you get?... But could n't find them anywhere near there a string of symbols when say writing...  union?  or you ’ re wrong my supplementary math under. A solid or hollow shape elements of one of the word  or. many times you... Stop the learning symbol, it becomes 98, which is 12 more than.! Site for people studying math at any level and professionals in related fields about a ?. The middle first-order predicate calculus. 2 of my supplementary math papers under quadratic graphs the .