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منتديات طلاب وطالبات جامعة الملك عبد العزيز منتديات طلاب وطالبات جامعة الملك عبد العزيز
قديم 19-09-2010, 06:25 AM   #15

my-nana

سبحان الله وبحمده

 
تاريخ التسجيل: Mar 2009
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افتراضي رد: طلبآتكم المستعجلة (بحوث ..برزنتيشن ..شرح ..وآجبآت ) الرجآء وضع الطلب هنآ..

وهذا موضوع عن الإســـــــــــراف
Extravagance is unrestrained excess. Extravagant behaviour includes
the frequent purchase of luxury goods, and was once considered one of the seven deadly sins (frequently known, in Latin, as luxuria); as a result of semantic change in the Romance languages, lust later replaced it in the list.

However, when the adjectival form - extravagant - is used to refer to a person, it is usually considered to be a deion of eccentric behaviour, rather than a moral criticism.
In economics, a luxury good is a good for which demand increases more than proportionally as income rises, in contrast to a "necessity good", for which demand is not related to income.[citation needed]

Luxury goods are said to have high income elasticity of demand: as people become wealthier, they will buy more and more of the luxury good. This also means, however, that should there be a decline in income its demand will drop. Income elasticity of demand is not constant with respect to income, and may change sign at different levels of income. That is to say, a luxury good may become a normal good or even an inferior good at different income levels, e.g. a wealthy person stops buying increasing numbers of luxury cars for his automobile collection to start collecting airplanes (at such an income level, the luxury car would become an inferior good).

 

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