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MARKET ADJUSTMENT: The economic analysis of the changes in market equilibrium caused by changes in the demand determinants and supply determinants. Given the two curves that comprise the market--the demand curve and the supply curve; each of which can increase or decrease; market adjustment comes in eight varieties. Four involve a shift of EITHER the demand curve OR the supply curve. The other four involve a shift of BOTH the demand curve AND the supply curve.
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                           POINT ELASTICITY: The relative responsiveness of a change in one variable (call it B) to an infinitesimally small change in another variable (call it A). The notion of point elasticity typically comes into play when discussing the elasticity at a specific point on a curve. Point elasticity can be calculated in a number of different ways. Sophisticated economists, using sophisticated mathematical techniques (better known as calculus) calculate point elasticity by using derivatives. Derivatives are calculus talk for infinitesimally small changes. The formula for calculating point elasticity using calculus is given as:The symbol that looks like a backward six (∂) is the mathematical notation for a derivative, or infinitesimally small change. The first term on the right-hand side of this formula is the percentage change in variable B and the second term is the percentage change in variable A.Unsophisticated folks can also calculate point elasticity without the use of sophisticated calculus. This is done with the midpoint elasticity formula, presented here: midpoint
elasticity | = | (B2 - B1)
(B2 + B1)/2 | ÷ | (A2 - A1)
(A2 + A1)/2 |
The first term on the right-hand side of the equation is the percentage change in variable B. The second term is the percentage change in variable A. The individual items are interpreted as this: A1 is the initial value of A before any changes, A2 is the ending value after A changes, B1 is the initial value of B before any changes, and B2 is the ending value after B changes.This midpoint elasticity formula actually calculates the average or arc elasticity of the entire line segment. However, it also calculates the point elasticity for the midpoint of a line segment.
Recommended Citation:POINT ELASTICITY, AmosWEB Encyclonomic WEB*pedia, http://www.AmosWEB.com, AmosWEB LLC, 2000-2026. [Accessed: February 10, 2026].
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RED AGGRESSERINE
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Today, you are likely to spend a great deal of time at a garage sale wanting to buy either a rechargeable battery for your computer or shoe laces for your snow boots. Be on the lookout for spoiled cheese hiding under your bed hatching conspiracies against humanity.
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The portion of aggregate output U.S. citizens pay in taxes (30%) is less than the other six leading industrialized nations -- Britain, Canada, France, Germany, Italy, or Japan.
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"Cherish your visions and your dreams as they are the children of your soul; the blue prints of your ultimate achievements." -- Napoleon Hill, Author
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NAA
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