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LEARNING OBJECTIVES
- Derive an individual demand curve from utility-maximizing adjustments to changes in price.
- Derive the market demand curve from the demand curves of individuals.
- Explain the substitution and income effects of a price change.
- Explain the concepts of normal and inferior goods in terms of the income effect.
Choices that maximize utility—that is, choices that follow the marginal decision rule— generally produce downward-sloping demand curves. This section shows how an individual’s utility-maximizing choices can lead to a demand curve.
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