Intermediate Microeconomics · 免费预览

市场需求、弹性与收益

市场需求将个人需求水平相加；弹性是需求量对价格变动的百分比反应；在缺乏弹性的区间收益上升，在富有弹性的区间收益下降；边际收益为 P 乘以 1 加 1 除以 e。

1. Summing the consumers

Summing the consumers

Elasticity

Revenue and its marginal twin

Constant elasticity families

For demand P equals 10 minus Q over 10, what is the elasticity at price 6, quantity 40?

Demand is inelastic at the current price. What does a small price rise do to revenue?

For the same demand, what is marginal revenue at quantity 40, and what does the number mean?

Demand is Q equals 100 over P. What is revenue at price 5, and at any price?

Same linear demand, compute the elasticity at price 2, quantity 80, and write the number with sign.

At what quantity does revenue peak for this demand, where MR equals zero? Write the number.

For demand P equals 10 minus Q over 10, what is the elasticity at price 8, quantity 20?

Same demand, what is marginal revenue at quantity 20, and what does it say?

What is the elasticity at price 5, quantity 50, the demand's midpoint?

Output rises from 40 to 50 on this demand curve. What happens to revenue?

For P equals 10 minus Q over 10, compute total revenue at quantity 50, and write the number.

Same demand, compute the elasticity at price 4 with quantity 60, and write the number with sign, rounded to two decimals.

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