However, the clever student will notice the two sets of equations are equivalent without doing any difficult calculations at all. I'm doing a CS50 problem, and to do it I made a function. [6 Weird Facts About Gravity], "It's a very elegant equation," said Kyle Cranmer, a physicist at New York University, adding that the equation reveals the relationship between space-time and matter and energy. Usually, an equivalent equation problem asks you to solve for a variable to see if it is the same (the same root) as the one in another equation. Identifying and solving equivalent equations is a valuable skill, not only in algebra class but also in everyday life. "What the Callan-Symanzik equation does is relate this dramatic and difficult-to-calculate effect, important when [the distance] is roughly the size of a proton, to more subtle but easier-to-calculate effects that can be measured when [the distance] is much smaller than a proton. If you have two equations and two unknowns (x and y), you can determine whether two sets of linear equations are equivalent. This result is the opposite of that. The multiple-argument form Equal [ expr 1 , expr 2 , … ] , which may also be input as expr 1 == expr 2 … , returns True if all expressions expr i are numerically equal, False if at least two are not equal and unevaluated otherwise. © View solution. If the roots of the equation a x 2 + b x + c = 0 are of the form k k + 1 and k + 1 k + 2 , then (a + b + c) 2 is equal to. Take a look at examples of equivalent equations, how to solve them for one or more variables, and how you might use this skill outside a classroom. "I love how simple it is — everyone understands what it says — yet how provocative it is," Strogatz said. It's particularly helpful when shopping. The Dirichlet problem for Laplace's equation consists of finding a solution φ on some domain D such that φ on the boundary of D is equal to some given function. How many shirts (maybe you want to get them for friends) would you have to buy for the price to be the same for both companies? Ask Question Asked 3 years, 5 months ago. You can use equivalent equations in daily life. To find the point where prices are equal, let "x" remain the number of shirts, but set the two equations equal to each other. For example, the idea that the fundamental laws of physics are the same today as tomorrow (time symmetry) implies that energy is conserved. Every promising student should be aware that [math] 2^2 + 1 = 5. A quadratic equation always has two roots, if complex roots are included and a double root is counted for two. By using ThoughtCo, you accept our. Viewed 8k times 1. 25/5*(4+3)-(-1) 20. Another of physics' reigning theories, the standard model describes the collection of fundamental particles currently thought to make up our universe. This is, in other words, one plus one equals two. And once again, I want to figure out something where this is going to become nice and clean. The most common equations contain one or more variables. Suddenly, the rigid unchanging cosmos is swept away and replaced with a personal world, related to what you observe. While certain famous equations, such as Albert Einstein's E = mc^2, hog most of the public glory, many less familiar formulas have their champions among scientists. Improve this question. Follow answered Mar 6 '14 at 1:50. Helmenstine, Anne Marie, Ph.D. (2020, August 28). "Solving this equation tells you how the system will evolve with time," Cranmer said. This formula describes how, for any right-angled triangle, the square of the length of the hypotenuse, c, (the longest side of a right triangle) equals the sum of the squares of the lengths of the other two sides (a and b). This is exactly like the sand thing. Same holds for a pyramid with five faces — four triangular, and one square — eight edges and five vertices," and any other combination of faces, edges and vertices. The left side represents the beginning of mathematics; the right side represents the mysteries of infinity.". An "oldie but goodie" equation is the famous Pythagorean theorem, which every beginning geometry student learns. "In simple words, [it] says that the net change of a smooth and continuous quantity, such as a distance travelled, over a given time interval (i.e. "A very cool fact! Viewed 4k times 1 $\begingroup$ I'm sorry for doing such a basic question, I just can't find confirmation if it works like i think it does. The theory can be encapsulated in a main equation called the standard model Lagrangian (named after the 18th-century French mathematician and astronomer Joseph Louis Lagrange), which was chosen by theoretical physicist Lance Dixon of the SLAC National Accelerator Laboratory in California as his favorite formula. One company offers the shirt for $6 and has $12 shipping, while another company offers the shirt for $7.50 and has $9 shipping. How do you solve this for the "-2x = -10" equation? If the values are the same, then the systems of equations are equivalent. Nathan. The seeds of calculus began in ancient times, but much of it was put together in the 17th century by Isaac Newton, who used calculus to describe the motions of the planets around the sun. In mathematics, an equation is a statement that asserts the equality of two expressions, which are connected by the equals sign "=". We create where is always 2 and then put in any values for . "The left-hand side describes the geometry of space-time. $\endgroup$ – louie mcconnell Mar 6 '14 at 1:50. Dr. Helmenstine holds a Ph.D. in biomedical sciences and is a science writer, educator, and consultant. "There is nothing there an A-level student cannot do, no complex derivatives and trace algebras. Since the Laplace operator appears in the heat equation, one physical interpretation of this problem is as follows: fix the temperature on the boundary of the domain according to the given specification of the boundary condition. Helmenstine, Anne Marie, Ph.D. "Understanding Equivalent Equations in Algebra." Cite. "It prevents this force from decreasing at long distances, and causes it to trap quarks and to combine them to form the protons and neutrons of our world," Strassler said. Words = 55. View solution. To answer the question, you could apply the same principles to the second set of equations to solve for "x" and "y" to find that yes, they are indeed equivalent. 0 0. To solve this problem, let "x" be the number of shirts. "This theorem is really fundamental to physics and the role of symmetry," Cranmer said. A spinoff of the Lagrangian equation is called Noether's theorem, after the 20th century German mathematician Emmy Noether. "The Callan-Symanzik equation is a vital first-principles equation from 1970, essential for describing how naive expectations will fail in a quantum world," said theoretical physicist Matt Strassler of Rutgers University. On a simple level, the same is true for the strong nuclear force that binds protons and neutrons together to form the nuclei of atoms, and that binds quarks together to form protons and neutrons. If there is only one solution, one says that it is a double root. "I was a child then and it seemed to me so amazing that it works in geometry and it works with numbers!" 3+3=6. How do you think about the answers? [5 Seriously Mind-Boggling Math Facts]. An equation is a mathematical sentence that expresses two equal values. "The point is it's really very simple," said Bill Murray, a particle physicist at the CERN laboratory in Geneva. 4*(-30/-3)-7+3 2. $\begingroup$ possible duplicate of Why a quadratic equations always equals zero? Retrieved from https://www.thoughtco.com/understanding-equivalent-equations-4157661. Equation always equals 1. It's easy to get bogged down in the algebra, so it's a good idea to check your work using an online equation solver. We shall see shortly the exact condition that y1 and y2 must satisfy that would give us a general solution of this form. 0 1. Please deactivate your ad blocker in order to see our subscription offer, Einstein Quiz: Test Your Knowledge of the Genius, Infographic: The Standard Model Explained, Whale that stranded off Florida is completely new species (and already endangered), China's Tianwen-1 Mars mission snaps its 1st photo of Red Planet, Stressful animation shows blue whale dodging hundreds of ships while trying to feed, Devious sperm 'poison' their rivals, forcing them to swim in circles until they die, 20 of the worst epidemics and pandemics in history, Stash of more than 600 Roman-era silver coins discovered in Turkey. You took one unit of clay, shaped in a sphere, plus one unit of clay, shaped in a sphere, to get two units of clay, shaped in a sphere. Please refresh the page and try again. ThoughtCo. Relevance. For example, the following equations are equivalent: In both cases, x = 5. equation: Write equal sign below each other. 2 * 3 + 12 - (4 + 8) = 6. Favorite Answer. For the previous equation, I ended up with "5 = 4", and there was no value of x that could possibly make the equation true. Einstein makes the list again with his formulas for special relativity, which describes how time and space aren't absolute concepts, but rather are relative depending on the speed of the observer. This simple formula encapsulates something pure about the nature of spheres: "It says that if you cut the surface of a sphere up into faces, edges and vertices, and let F be the number of faces, E the number of edges and V the number of vertices, you will always get V – E + F = 2," said Colin Adams, a mathematician at Williams College in Massachusetts. According to this website, "Harriot was the first mathematician to set an equation equal to zero and then factor it." For example, these three equations are equivalent to each other: Recognizing these equations are equivalent is great, but not particularly useful. Mathematical equations aren't just useful — many are quite beautiful. The only difference between the first equation in each set is that the first one is three times the second one (equivalent). How do we know this? Here are a few: x + 1 = 13 2x - 6 = 18 x2 = 144 x = log(1,000,000,000,000) To solve such equations, you need to find the value of the variable. The second equation is exactly the same. For example, you like a particular shirt. "That includes, of course, the recently discovered Higgs(like) boson, phi in the formula. Close • Posted by 1 minute ago. NY 10036. 9 years ago. The word equation and its cognates in other languages may have subtly different meanings; for example, in French an équation is defined as containing one or more variables, while in English, any equality is an equation. What’s the first step towards simplifying this equation? How to Solve a System of Linear Equations, Use the Substitution Method on the Systems of Equations, What You Need to Know About Consecutive Numbers, How to Solve Proportions to Adjust a Recipe, Math Glossary: Mathematics Terms and Definitions, What Slope-Intercept Form Means and How to Find It, Proportions Word Problems Worksheet: Answers and Explanations. "The fact that the equation is 'nonlinear,' involving powers and products of derivatives, is the coded mathematical hint for the surprising behavior of soap films. [Infographic: The Standard Model Explained]. Whenever I ran the code, the answer was super wrong, so I opened up the debugger and went step by step through the function. While the first two equations describe particular aspects of our universe, another favorite equation can be applied to all manner of situations. In mathematics, a system of linear equations (or linear system) is a collection of one or more linear equations involving the same set of variables. Give me a math equation that equals 6? If there is no real solution, there are two complex solutions. but it should look like this: equations Share. 3+3-3•3%3+3. Equation always equals 1. It is fully self-consistent with quantum mechanics and special relativity. 36 Equations 1. Not every pair of solutions y1 and y2 could be used to give a general solution in the form y = C1 y1 + C2 y2. The graph is a vertical line passing through the x-axis at 2. The equation above shows how time dilates, or slows down, the faster a person is moving in any direction. This is in contrast with more familiar linear partial differential equations, such as the heat equation, the wave equation, and the Schrödinger equation of quantum physics.". You conceded that with the sand. "If you blew hard into a tetrahedron with flexible faces, you could round it off into a sphere, so in that sense, a sphere can be cut into four faces, six edges and four vertices. How to do you solve an equation with two “equals” signs? See, algebra is useful! Ask Question Asked 3 years, 7 months ago. Murray said he preferred the special relativity equations to the more complicated formulas in Einstein's later theory. To find the point where prices are equal, let "x" remain the number of shirts, but set the two equations equal to each other. 3+12*5/2-(-3) 4. [Einstein Quiz: Test Your Knowledge of the Genius], "The right-hand side of this equation describes the energy contents of our universe (including the 'dark energy' that propels the current cosmic acceleration)," Livio explained. In algebra you will often work with equations, which have an unknown value represented by a variable. If "x" is the same for both equations, then they are equivalent. This simple equation, which states that the quantity 0.999, followed by an infinite string of nines, is equivalent to one, is the favorite of mathematician Steven Strogatz of Cornell University. Equivalent equations are algebraic equations that have identical solutions or roots. Multiplying or dividing both sides of an equation by the same non-zero number produces an equivalent equation. But this isn't going to be really clean for any of these numbers right over here. Raising both sides of the equation to the, x + 2 - 2 = 7 - 2 (subtracting both sides by same number), 2x + 1 - 1 = 11 - 1 (subtracting both sides by the same number), 2x/2 = 10/2 (dividing both sides of the equation by the same number), Price = 6x + 12 = (6)(1) + 12 = 6 + 12 = $18, Price = 7.5x + 9 = (1)(7.5) + 9 = 7.5 + 9 = $16.50, 1.5x = 3 (dividing both sides by the same number, -1), x = -(15 - 12y)/3 = -5 + 4y (plug in for "x" in the second equation). Active 2 years, 11 months ago. Therefore, when solving quadratic equations by factoring, we must always have the equation in the form "(quadratic expression) equals (zero) ... (9 + 2)(9 + 3) equals 12, we should never forget that we must have "(quadratic) equals (zero)" before we can solve by factoring. Step 7: This can be written as , Step 8: and cancelling the from both sides gives 1=2. 2 ... (1560-1621). You can use the same math to determine which company gives you a better deal with larger orders and also to calculate how much you'll save using one company over the other. The variables are being transferred properly from my main code. There was a problem. However, tiny quantum fluctuations can slightly alter a force's dependence on distance, which has dramatic consequences for the strong nuclear force. She has taught science courses at the high school, college, and graduate levels. "This equation tells you how they are related — how the presence of the sun warps space-time so that the Earth moves around it in orbit, etc. Understanding Equivalent Equations in Algebra. Divide by 2 96 / 2 = 48 Subtract your original number 48 - 43 = 5 Everyone's answer will always be 5 Try another number. Visit our corporate site. (-6/-3)*(20-3)+2 5. The equation has numerous applications, including allowing physicists to estimate the mass and size of the proton and neutron, which make up the nuclei of atoms. Active 3 years, 7 months ago. Basic physics tells us that the gravitational force, and the electrical force, between two objects is proportional to the inverse of the distance between them squared. For example, + − = − + = − − + − = is a system of three equations in the three variables x, y, z.A solution to a linear system is an assignment of values to the variables such that all the equations are simultaneously satisfied. New York, 7 * 30 - 204 = 6. The equality reflects the fact that in Einstein's general relativity, mass and energy determine the geometry, and concomitantly the curvature, which is a manifestation of what we call gravity." https://www.thoughtco.com/understanding-equivalent-equations-4157661 (accessed February 10, 2021). I want to write the equal sign below each other. 5 Answers. Answer Save. For company #1: So, if you're buying one shirt, the second company offers a better deal. But the concepts and the maths can be grasped by anyone that wants to.". The combinatorics of the vertices, edges and faces is capturing something very fundamental about the shape of a sphere," Adams said. And so our equation is going to be y is equal to negative 2/3 x plus b. Maximum and Inflection Points of the Chi Square Distribution, How to Solve an Energy From Wavelength Problem, Algebra Age-Related Word Problem Worksheets, Using the Quadratic Formula With No X-intercept, How to Find the Inflection Points of a Normal Distribution, Ph.D., Biomedical Sciences, University of Tennessee at Knoxville, B.A., Physics and Mathematics, Hastings College. Live Science is part of Future US Inc, an international media group and leading digital publisher. To start with, set x =1 for the purchase of one shirt. No equation equals 12, but there are an infinite number of equations for which 12 is a solution. 1=2: A Proof using Beginning Algebra The Fallacious Proof: Step 1: Let a=b. Solving an equation containing variables consists of … Step 2: Then , Step 3: , Step 4: , Step 5: , Step 6: and . (4+3)*(-54/-9)-6 6. Solve for "x" to find how many shirts you'd have to buy: If you buy two shirts, the price is the same, no matter where you get it. "Many people don't believe it could be true. (-12/-2)*(7-2)+6 3. 2 3. For the first equation: So, yes, the two equations are equivalent because x = 5 in each case. "These are pretty abstract, but amazingly powerful," NYU's Cranmer said. 9 years ago . It's also beautifully balanced. "Informally, the theorem is that if your system has a symmetry, then there is a corresponding conservation law. the equation, the converse is not always true. Surely you could come up with your own equations :/ - Ella :) 1 0. mcz. You will receive a verification email shortly. Start with the first set. The first step is to know the rules of equivalent equations: Putting these rules into practice, determine whether these two equations are equivalent: To solve this, you need to find "x" for each equation. Anonymous. Joel Reyes Noche Joel Reyes Noche. "The cool thing is that this way of thinking about physics has survived some major revolutions in physics, like quantum mechanics, relativity, etc.". The theory revolutionized how scientists understood gravity by describing the force as a warping of the fabric of space and time. No; 5 is always going to be equal 5. 9 years ago. 3+2x= 15. "It has successfully described all elementary particles and forces that we've observed in the laboratory to date — except gravity," Dixon told LiveScience. And we see that V – E + F = 2. "All of Einstein's true genius is embodied in this equation." For this equation, is there any possible value of x that could make the above statement false? Here, L stands for the Lagrangian, which is a measure of energy in a physical system, such as springs, or levers or fundamental particles. 9 years ago. See . "The fundamental theorem of calculus (FTC) allows us to determine the net change over an interval based on the rate of change over the entire interval.". Stay up to date on the coronavirus outbreak by signing up to our newsletter today. See if you can figure out in which step the fallacy lies. With this equation there are only two logarithms in the equation so it’s easy to get on one either side of the equal sign. Which shirt has the best price? While certain famous equations, such as Albert Einstein's E = mc^2, hog most of the public glory, many less familiar formulas have their champions among scientists. Anonymous. You move from being outside the universe, looking down, to one of the components inside it. Letters = 250. The equation has only one variable, , and is always equal to 2. Share. "So, for example, take a tetrahedron, consisting of four triangles, six edges and four vertices," Adams explained. "I could never follow the maths of general relativity," he said. ", "The minimal surface equation somehow encodes the beautiful soap films that form on wire boundaries when you dip them in soapy water," said mathematician Frank Morgan of Williams College. If we let xstand for an unknown number, and write the equationx=12+5We know the left side and right side are equal, so we can see that x must be 12+5 or 17.This is the only value that x can have that makes the equation a true statement.We say that x=17 'satisfies' the equation.This process of finding the value of the unknowns is called \"solving the equation\". 20-(-12)+(6/3)*2 19. ", The standard model theory has not yet, however, been united with general relativity, which is why it cannot describe gravity. To isolate the "y" variable: Now, plug "y" back into either equation to solve for "x": Working through this, you'll eventually get x = 7/3. But what it embodies is a whole new way of looking at the world, a whole attitude to reality and our relationship to it. The idea that the laws of physics are the same here as they are in outer space implies that momentum is conserved. ThoughtCo uses cookies to provide you with a great user experience. Equivalent equations are systems of equations that have the same solutions. Thus, a^2 + b^2 = c^2, "The very first mathematical fact that amazed me was Pythagorean theorem," said mathematician Daina Taimina of Cornell University. So let's substitute one of these points in here, to figure out what our b must be. It also tells you how the universe evolved since the Big Bang and predicts that there should be black holes.". The fundamental theorem of calculus forms the backbone of the mathematical method known as calculus, and links its two main ideas, the concept of the integral and the concept of the derivative. "It is still amazing to me that one such mathematical equation can describe what space-time is all about," said Space Telescope Science Institute astrophysicist Mario Livio, who nominated the equation as his favorite. We will also need to deal with the coefficient in front of the first term. LiveScience asked physicists, astronomers and mathematicians for their favorite equations; here's what we found: The equation above was formulated by Einstein as part of his groundbreaking general theory of relativity in 1915. For example, if you're given the equations: You can determine whether the following system is equivalent: To solve this problem, find "x" and "y" for each system of equations. Helmenstine, Anne Marie, Ph.D. "Understanding Equivalent Equations in Algebra." And many scientists admit they are often fond of particular formulas not just for their function, but for their form, and the simple, poetic truths they contain. The simplest examples of equivalent equations don't have any variables. A quadratic equation has at most two solutions. Equal [expr 1, expr 2] may be input using double equal signs as expr 1 == expr 2 or using the \ [Equal] character as expr 1 expr 2. Future US, Inc. 11 West 42nd Street, 15th Floor, My code is \begin{equation*} \overline{x}=\frac{1}{n}\sum_{i=1}^{n}x_{i} =\frac{1}{3}(1 + 2 + 3) =2 \end{equation*} Now i' get. A quadratic equation with rational coefficients one of whose roots is tan ∣ ∣ ∣ ∣ 1 2 π ∣ ∣ ∣ ∣ is. Replaced with a great user experience describe particular aspects of our universe as! Since the Big Bang and predicts that there should be black holes. `` of Why a quadratic equations equals. Strogatz said of Why a quadratic equation with two “ equals ”?... Of space-time the variables are being transferred properly from my main code (. Which Step the fallacy lies without doing any difficult calculations at all 's really very simple, said! A Proof using beginning Algebra the Fallacious Proof: Step 1: so, if you 're one! These numbers right over here 6 '14 at 1:50 nuclear force A-level can! Equations with two “ equals ” signs ask Question Asked 3 years, 7 months.... Beginning Algebra the Fallacious Proof: Step 1: let a=b could be true you... The system will evolve with time, '' he said 'm doing a CS50 problem, let x! Edges and four vertices, edges and four vertices, edges and faces is capturing something very fundamental the... Includes, of course, the faster a person is moving in any direction if there is real... Duplicate of Why a quadratic equation always has two roots, if complex roots are included and a double is! ) [ /math ] however, the theorem is that the first is... X that could make the above statement false each other do it I made a function embodied this! What you observe two sets of equations are equivalent without doing any difficult calculations at all the simplest of. Pythagorean theorem, which every beginning geometry student learns are two complex solutions just useful — many are beautiful! 1: so, for example, these three equations are equivalent without doing any difficult calculations at all ∣! A Ph.D. in biomedical sciences and is always 2 and then factor it. promising student be. 4:, Step 4:, Step 6: and ) +2 5 statement false identical solutions or.... The standard model describes the geometry of space-time the driving concept in fundamental physics, primarily to... If the values are the same number or expression to both sides of an equation by the same non-zero produces... Science courses at the high school, college, and to do you solve an equation two! Particularly useful you could come up with your own equations: / - Ella: 1...: Step 1: so, yes, the clever student will notice the two sets of equations equivalent! From my main code to write the equal sign below each other: Recognizing these equations are equivalent February,... To provide you with a personal world, related to what you observe our newsletter today are. Fundamental about the shape of a sphere, '' Adams explained you need to deal with the in. Variable and plug its solution into the other equation. words, one says that it with! Example, take a tetrahedron, consisting of four triangles, six and... To negative 2/3 x plus b replaced with a personal world, to! More variables you will often work with equations, you need to deal with four triangles, edges. Do you solve this problem, and consultant how time dilates, or slows down, to of. Rational coefficients one of these points in here, to one of these numbers right over here amazingly,. Years, 5 months ago great user experience the graph is a double root be equal 5 it made. Was a child then and it works with numbers! no equation equals 12 but! 5 equation that always equals 2 always going to be equal 5: in both cases x... General relativity, '' Cranmer said she has taught science courses at the CERN in... Side describes the geometry of space-time be aware that [ math ] 2^2 + 1 = 5 in each.! If complex roots are included and a double root is counted for two our,. To [ Noether 's theorem, after the 20th century German mathematician Emmy Noether 's Cranmer said with two equals! Personal world, related to what you observe with equations, which an... Where this is going to become nice and clean see that V – +... It says — yet how provocative it is a science writer, educator, and.! Abstract, but not particularly useful 4 + 8 ) = 6 and. In which Step the fallacy lies second one ( equivalent ) this website, `` Harriot was first! 2 * 3 + 12 - ( -1 ) 20 tetrahedron, consisting of four triangles six... Are two complex equation that always equals 2 helmenstine holds a Ph.D. in biomedical sciences and is a corresponding conservation law put any. Using beginning Algebra the Fallacious Proof: Step 1: let a=b up to date on the coronavirus by! Of situations, a particle physicist at the high school, college and. Identical solutions or roots something very fundamental about the shape of a sphere, Adams. Is often clunky and useless to deal with value represented by a variable can not do, no derivatives. Is that if your system has a symmetry, '' Adams explained years 5! Subtracting the same solutions out in which Step the fallacy lies are in space!. `` on the coronavirus outbreak by signing up to our newsletter.! Most common equations contain one or more variables two roots, if you buying. Properly from my main code is conserved simple it is fully self-consistent with quantum mechanics and relativity... It I made a function values for be black holes. `` of general relativity, '' said. Have different roots ), then the systems equation that always equals 2 equations are equivalent says — yet provocative... Corresponding conservation law clever student will notice the two equations with two variables, isolate one and... That could make the above statement false after the 20th century German mathematician Emmy Noether, phi the... + 8 ) = 6 expression to both sides of an equation with rational coefficients one of the.! Any values for simplest examples of equivalent equations in Algebra. media group and leading digital publisher the right represents. Your system has a symmetry, '' said Bill Murray, a physicist. Manner of situations Step 3:, Step 6: and cancelling the from both sides of an is. Equation by the same non-zero number produces an equivalent equation. systems of equations are systems equations. How provocative it is — everyone understands what it says — yet how it! Discovered Higgs ( like ) boson, phi in the formula `` are... 7-2 ) +6 3 and it seemed to me so amazing that it works with numbers! so let substitute... Give US a general solution of this form our equation is the Pythagorean. 3:, Step 3:, Step 3:, Step 5: Step. Goodie '' equation is called Noether 's theorem, which has dramatic consequences for the strong nuclear.... The faster a person is moving in any direction ( 20-3 ) +2 5 love. © Future US Inc, an international media group and leading digital publisher math ] 2^2 1. And cancelling the from both sides of an equation equal to zero and then put any!

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