MGF 405 Lecture Notes - Lecture 3: Demand Curve

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Cross price elasticity % change in quantity demanded of a given product due to the % change in the price in another product. The demand in product a changes when the price of product b changes. Example: the price of cd players goes down; the demand of cd"s does up. When cross price elasticity positive + then two goods are substitutes. When cross price elasticity negative then two goods are complements. When cross price elasticity equal = then two goods are independent (do not. Price elasticity of demand % change in quantity demanded/ % change in price. The measure of the relationship between a change in the quantity demanded of a specific good and a change in its price. *example: gas prices increase by 50%, gas purchases decrease by 25% Ped = 0 (perfectly inelastic) demand does not change when price change vertical on demand curve .

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