[ECON] 2017 DSE經濟科討論區(3)

Producer surplus =profit+fixed cost
咁consumer surplus 係？

producer surplus係 PxQ- TVC

係咩

TR-TFC-TVC=profit
TR-TVC=profit+TFC

呢兩條點做
可唔可以畫圖解釋比我聽
唔該巴打們

Elective 2 有咩要注意

今晚拜下adam smith希望有4

Milton friedman

Elective 2 有咩要注意

1) Straight / concave ppf reason
2) straight ppf :
production point based on CA
CPF based on production point

3) Concave ppf
Slope of TOT=Cpf
Production point=tangent of cpf

4) Pa vs Pt -> OC
Pt vs Ct -> Tot
Ca vs Ct -> gain

elective 有冇如果做晒兩題會點
計高分啲嗰題?

呢兩條點做
可唔可以畫圖解釋比我聽
唔該巴打們

https://saylordotorg.github.io/text_international-economics-theory-and-policy/s10-trade-policy-effects-with-perf.html

An Increase in Domestic Demand
Consider Figure 7.28 "Effects of a Demand Increase", which depicts a small importing country. PFT is the free trade price. If a tariff of T is put into place, the domestic price rises to PT and imports equal DT − ST. A quota set equal to QT (the blue line segment) would generate the same increase in price to PT and the same level of imports. Thus the tariff T and quota QT are said to be equivalent to each other.

Figure 7.28 Effects of a Demand Increase


Next, consider the effects in this market when there is an increase in domestic demand, represented by a rightward shift of the demand curve. A demand increase could arise because of rising incomes in the country or because consumers’ preferences become more favorable to this product.

With a tariff in place initially, the increase in domestic demand will leave the domestic price unaffected. Because this is a small country, the world price does not change and thus the domestic tariff-inclusive price remains at PT = PFT + T. Domestic supply also remains at ST, but demand rises to D′T, causing an increase in imports to D′T − ST.

With a quota in place initially, the increase in domestic demand causes the domestic price to rise to PQ in order to maintain the import level at QT (the higher blue line segment). Domestic supply will rise with the increase in price (not labeled), while domestic demand will fall.

The protective effect of the tariff or quota means the degree to which the domestic producers are protected in the face of the market change. Since the domestic price rises more with the quota in place than with the tariff, domestic producers will enjoy a larger supply and consequently a higher level of producer surplus (not shown). Thus the quota is more protective than a tariff in the face of an increase in domestic demand.

可以解釋下答案點解係B嗎
諗極都唔明白

可以解釋下答案點解係B嗎
諗極都唔明白

effective price ceiling is cancelled
P升Qt升,TR升

唔該巴打
份野個答案錯嘅

想問下呢個係咪錯
同埋問到why mb=d or mc=s應該點答？

想問下呢個係咪錯
同埋問到why mb=d or mc=s應該點答？

係咁樣read

lv2同lv3有約幾多成

有無巴打肯講多次LRAS點解vertical,SRAS點解upward sloping AD點解downward slpoing

仲有小弟唔係好識計unemployment rate......但又搵唔番個example... 大概係俾左employment,underemployment同埋above 15years old 嘅人口你 但唔識計。。 希望有巴打教下

不如巴打們講下lras def
中文版唔該

lv2同lv3大約幾多成

推

仲有關於economic of scale
係咪有細分唔同type架？例如？

sras今年改左
剩係答imperfect adjustment input and output price 就得

有無巴打肯講多次LRAS點解vertical,SRAS點解upward sloping AD點解downward slpoing

仲有小弟唔係好識計unemployment rate......但又搵唔番個example... 大概係俾左employment,underemployment同埋above 15years old 嘅人口你 但唔識計。。 希望有巴打教下

adas model入面短期去長期=>lras係垂直
你知點解sras係向右上斜自然知點解lras係垂直