What does the price elasticity of demand indicate? How isthe perfectly inelastic demand curve illustrated . Give an example of a good which has perfectly inelastic demand and write down what the elasticity of perfectlyinelastic demand is equal to. What does the income elasticity of demand indicate ? What is the expected sign for income elasticity of demand for an inferior good

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What does the price elasticity of demand indicate? How isthe perfectly inelastic demand curve illustrated . Give an example of a good which has perfectly inelastic demand and write down what the elasticity of perfectlyinelastic demand is equal to. What does the income elasticity of demand indicate ? What is the expected sign for income elasticity of demand for an inferior good ? 

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Measurements of elasticity

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