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The initial paragraphs of this article are nearaaly impenetrable—it's as if the person who wrote it deliberately wanted to make a simple concept obscure.
I have no beef with the mathematical section of the article, which is technical enough for whomsoever wants it. But why oh why is the initial section so obscure? Paul Samuelson would not approve. -- TallulahBelle 14:48, 19 May 2007 (UTC)
Have deleted 'such as the pink, yellow, brown, blue, and other "stuff." ' from the first paragraph as it is obvious nonsense. 86.24.144.182 ( talk) —Preceding undated comment was added at 14:55, 7 September 2008 (UTC)
Have the usual laws, such as Cournot Aggregation, "Adding Up Rule", Homogeneity, Slutsky Equation, and symmetry been written about elsewhere? I would have expected them to be included on an article about demand elasticity....
In fact, why do we have several separate articles on elasticity, price elasticity, cross price elasticity, and income elasticity? Given the similarlity of definitions, and that the concepts are mathematically linked by the above formulas in consumer theory, it would seem to make more sense to discuss them together. Certainly, their ties to one another should be explained. Coleca 12:21, 18 May 2007 (UTC)
Why include percentage in the definition? Percentage is just a way of expressing of a number as a fraction of 100. Since it is a fraction the factors 100 cancel. I would suggest relative change. The use of percentages give you a pure number that is not unit dependent.
What determines the elasticity of demand for a good or service?
The way Ed has been defined makes it a negative number.
So strictly you should either compare Ed to -1, or talk about abs(Ed).
Can I get some exam questions on Demand and Supply and Elasticity
It should also mention that when demand is inelastic, taxes on good are paid mostly by consumers & vice-versa
205.160.23.2 ( talk) 20:22, 4 December 2008 (UTC)
This article needs references.
Explain the implicaion of a curved deman schedule on the elasticity of demand 196.44.102.241 12:10, 8 December 2006 (UTC)
I'm a little bit confused about this. Let's take a good at an equilibrium where it's unit elastic (elasticity=1). Let's say we sell 200 oranges for 10 $ each. We cut the price to 5$ (-50%) and sales go up to 300 (+50%) oranges. So at this point the good is clearly unit elastic. But if we look at our revenue, it has changed. The revenue was 200*10=2000 before but is now only 5*300=1500. So I don't understand how you can say that at unit elasticity "the total revenue remains unchanged". Please explain this to me? //Anonymous
When the price is halved, the sales don't go up by 50%, they double. Also, when prices are doubled, quantity demanded is halved. 121.45.194.43 11:45, 4 October 2007 (UTC)
But then %change of QD/% change of P is equal to 4... that's not unit elastic. ( Bonzai273 ( talk) 10:11, 29 May 2008 (UTC))
An increase in Q frm 200 to 300 is a 150% increase not 50%. 200 increased by 50% is 250. So you have 150/50 = -3
-- Jgard5000 ( talk) 21:50, 27 September 2009 (UTC)jgard5000