Intermediate Microeconomics · 免费预览
消费者剩余
保留价格叠加起来构成需求曲线，消费者剩余是需求曲线下方、价格以上的面积；对于拟线性偏好，它恰好精确衡量价格变化所带来的福利。
1. Reservation prices
Reservation prices
2. The area under the curve
The area under the curve
3. When the area is exact
When the area is exact
4. Applications
Applications
5. The discrete count
Reservation prices run 10, 9, 8, 7, 6, 5 for successive units and price is 6. How many units are bought?
6. The triangle computation
Linear demand P equals 10 minus Q over 10 at price 6. What is consumer surplus?
7. A price drop's gain
Same demand, price falls from 6 to 4. By how much does consumer surplus rise?
8. When the area is exact
For which preference family is the demand-curve area an exact welfare measure?
9. Surplus at a lower price
Same linear demand, compute consumer surplus at price 4, and write the number.
10. Quantity at the choke
At what quantity does this demand curve reach the price axis? Compute Q when P equals 0, and write the number.
11. Units bought at seven
Reservation prices run 10, 9, 8, 7, 6, 5 for successive units and the price is 7. How many units are bought?
12. Surplus from the reservation ladder
With reservations 10, 9, 8, 7, 6, 5 and price 6, what total surplus do the purchases deliver?
13. Surplus higher up the curve
For the linear demand P equals 10 minus Q over 10, what is consumer surplus at price 8?
14. Surplus midway down
Same demand, price 5. What is consumer surplus?
15. Surplus at the high price
For P equals 10 minus Q over 10, compute consumer surplus at price 8, and write the number.
16. Surplus at the mid price
Same demand, compute consumer surplus at price 5, and write the number.