The demand function for Good X is Qd(p) = 1/2(p + 1)^2 . (a) Find the price elasticity of demand using the differential version of the formula and express the elasticity in terms of p only. (b) Based on the price elasticity of demand you find in (a), specify the values of p in which the demand for Good X is, respectively, elastic, unit elastic, and inelastic.

Managerial Economics: Applications, Strategies and Tactics (MindTap Course List)
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Chapter3: Demand Analysis
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The demand function for Good X is Qd(p) = 1/2(p + 1)^2
.
(a) Find the price elasticity of demand using the differential version of the formula and
express the elasticity in terms of p only.
(b) Based on the price elasticity of demand you find in (a), specify the values of p in
which the demand for Good X is, respectively, elastic, unit elastic, and inelastic.

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