# 3: Elasticities of Demand and Supply

- Page ID
- 45351

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- 3.3: Computing Demand Elasticities
- There are occasions in this course where you will need to compute elasticities. There are two formulas used to do this. One is the point formula. The point formula will be most important for this course and is also most commonly in published studies on food demand. The other formula is called the arc or average formula. Let us spend some time on each.