[ECON] 2017 DSE經濟科討論區(2)

1001 回覆
7 Like 1 Dislike
2017-04-20 20:43:37
其實答e2 comparative advantage 個陣可唔可以用slope答？之前學校考試咁答個miss比左個？？？我

你答斜d/平d?

唔好啦 點解要咁答

唔洗寫咁多，不過自從呢次之後冇再咁寫過
2017-04-20 21:06:43
Why demand curve is horizontal for a firm in perfectly competitive market?

Individual firm cannot influence the market price

At P< P* no incentive as it can sell as much as wanted at P*
At P = P* can sell as much as they want
At P > P* demand = 0

Therefore, firm can only sell goods at mkt eqm price
2017-04-20 21:11:30

係咪因為佢比左個nominal interest rate
所以就算佢actual inflation 係4%
nominal interest rate 都中係5%

本身我係咁諗
但係四個答案都唔啱
咁諗其實錯左咩

Nominal interest rate係事前定落，唔會變

R=5%, actual inflation rate = 4%, actual r=5-4=1%

Cost of holding money=R=5%
2017-04-20 21:13:05
其實答e2 comparative advantage 個陣可唔可以用slope答？之前學校考試咁答個miss比左個？？？我

你答斜d/平d?

唔好啦 點解要咁答

唔洗寫咁多，不過自從呢次之後冇再咁寫過

一係計實數
一係睇specialize邊樣

無見過用slope
2017-04-20 21:27:49

係咪因為佢比左個nominal interest rate
所以就算佢actual inflation 係4%
nominal interest rate 都中係5%

本身我係咁諗
但係四個答案都唔啱
咁諗其實錯左咩

actual cost of holding money 永遠等於nominal interest rate



講返上面手寫張紙
要分返開個利率係指money定係bond
expected real interest rate用題目資料計係5-2=3, 但呢個係bond既expected real interest rate(return rate)黎
同理, actual bond real interest rate(return rate)係5-4=1
依家題目叫你搵actual cost of holding money, 你係唔可以用bond既real rate直接當做moeny既real rate, 兩個概念黎唔溝得埋
因為money本身假設做冇return, 而bond有return, 而portfolio假設左只可以持有呢兩種財富形式


成個問題應該係, 如果題目問actual cost of holding money, 可唔可以用
actual nominal interest rate去睇, 定係必須要照用expected nominal interest rate睇, 定係兩隻其實概念上冇必別, 仰或數值上兩者其實係相等

real interest rate可以分expected同actual, 咁nominal interest rate又得唔得?
expected nominal interest rate = expected real interest rate + expected inflation rate
咁actual real interest rate + actual inflation rate係咪=actual nominal interest rate??
2017-04-20 21:35:52
Why demand curve is horizontal for a firm in perfectly competitive market?

Individual firm cannot influence the market price

At P< P* no incentive as it can sell as much as wanted at P*
At P = P* can sell as much as they want
At P > P* demand = 0

Therefore, firm can only sell goods at mkt eqm price

Thanks巴打
睇返d&s嘅notes 個陣cliff話demand horizontal f6先教
2017-04-20 21:38:13
Why demand curve is horizontal for a firm in perfectly competitive market?

Individual firm cannot influence the market price

At P< P* no incentive as it can sell as much as wanted at P*
At P = P* can sell as much as they want
At P > P* demand = 0

Therefore, firm can only sell goods at mkt eqm price

This is the reason for horizontal Demand meh
2017-04-20 21:38:45
Why demand curve is horizontal for a firm in perfectly competitive market?

Individual firm cannot influence the market price

At P< P* no incentive as it can sell as much as wanted at P*
At P = P* can sell as much as they want
At P > P* demand = 0

Therefore, firm can only sell goods at mkt eqm price

This is the reason for horizontal Demand meh

Isn't it the effect of a horizontal Demand
2017-04-20 21:41:21
Why demand curve is horizontal for a firm in perfectly competitive market?

Individual firm cannot influence the market price

At P< P* no incentive as it can sell as much as wanted at P*
At P = P* can sell as much as they want
At P > P* demand = 0

Therefore, firm can only sell goods at mkt eqm price

This is the reason for horizontal Demand meh

Isn't it the effect of a horizontal Demand

我覺得有少少係解釋緊點解firm in perfectly competitive market係price taker
2017-04-20 21:46:56
Why demand curve is horizontal for a firm in perfectly competitive market?

Individual firm cannot influence the market price

At P< P* no incentive as it can sell as much as wanted at P*
At P = P* can sell as much as they want
At P > P* demand = 0

Therefore, firm can only sell goods at mkt eqm price

This is the reason for horizontal Demand meh

Isn't it the effect of a horizontal Demand

我覺得有少少係解釋緊點解firm in perfectly competitive market係price taker

The firm can sell any quantity it chooses at the market price, so marginal revenue equals price and the demand curve for the firm’s product is horizontal at the market price.
2017-04-20 21:47:43
Why demand curve is horizontal for a firm in perfectly competitive market?

Individual firm cannot influence the market price

At P< P* no incentive as it can sell as much as wanted at P*
At P = P* can sell as much as they want
At P > P* demand = 0

Therefore, firm can only sell goods at mkt eqm price

This is the reason for horizontal Demand meh

Isn't it the effect of a horizontal Demand

我覺得有少少係解釋緊點解firm in perfectly competitive market係price taker

The firm can sell any quantity it chooses at the market price, so marginal revenue equals price and the demand curve for the firm’s product is horizontal at the market price.

大學econ ppt
2017-04-20 22:04:18
Why demand curve is horizontal for a firm in perfectly competitive market?

Individual firm cannot influence the market price

At P< P* no incentive as it can sell as much as wanted at P*
At P = P* can sell as much as they want
At P > P* demand = 0

Therefore, firm can only sell goods at mkt eqm price

This is the reason for horizontal Demand meh

Isn't it the effect of a horizontal Demand

我覺得有少少係解釋緊點解firm in perfectly competitive market係price taker

The firm can sell any quantity it chooses at the market price, so marginal revenue equals price and the demand curve for the firm’s product is horizontal at the market price.

大學econ ppt


大學ppt都係咁講
2017-04-20 22:16:34

係咪因為佢比左個nominal interest rate
所以就算佢actual inflation 係4%
nominal interest rate 都中係5%

本身我係咁諗
但係四個答案都唔啱
咁諗其實錯左咩

actual cost of holding money 永遠等於nominal interest rate



講返上面手寫張紙
要分返開個利率係指money定係bond
expected real interest rate用題目資料計係5-2=3, 但呢個係bond既expected real interest rate(return rate)黎
同理, actual bond real interest rate(return rate)係5-4=1
依家題目叫你搵actual cost of holding money, 你係唔可以用bond既real rate直接當做moeny既real rate, 兩個概念黎唔溝得埋
因為money本身假設做冇return, 而bond有return, 而portfolio假設左只可以持有呢兩種財富形式


成個問題應該係, 如果題目問actual cost of holding money, 可唔可以用
actual nominal interest rate去睇, 定係必須要照用expected nominal interest rate睇, 定係兩隻其實概念上冇必別, 仰或數值上兩者其實係相等

real interest rate可以分expected同actual, 咁nominal interest rate又得唔得?
expected nominal interest rate = expected real interest rate + expected inflation rate
咁actual real interest rate + actual inflation rate係咪=actual nominal interest rate??

nominal interest rate 冇分expected同actual

等我幫你清concept啦
嗱，而家你想借錢比人，咁收幾多interest 好？你要訂立一個nominal interest rate, using Fisher Equation:
借錢俾人所訂立的nominal interest rate= 你想收到嘅real interest rate + expected inflation rate

好喇，而家人地還咗錢，你想計下自己收嘅real interest rate 係咪真係你本身想收到嘅real interest rate，using this equation, which IS NOT fisher equation:
realized real interest rate= 訂立左嘅nominal interest rate - actual inflation rate

成個flow就係咁，由頭到尾nominal interest rate 只有一個，就係你自己訂立嗰個～～～～～～～


其實可以當fisher equation有兩條

一條係" 預期版 " 一條係" 真實版 "
預期版' : i = r(e) + △%p (e)
真實版：i =r(a) + △%p(a)
a for actual, e for expected (△%p係通脹率)
咁你做呢d q就只係照單執藥，佢話 expected inflation rate咪△%p (e) 囉。
佢問 real return rate咪 r (a) ,expected ge咪r (e)
唯一要知就人 i仔係 interchangeable in such equations
2017-04-20 22:29:45

Individual firm cannot influence the market price

At P< P* no incentive as it can sell as much as wanted at P*
At P = P* can sell as much as they want
At P > P* demand = 0

Therefore, firm can only sell goods at mkt eqm price

This is the reason for horizontal Demand meh

Isn't it the effect of a horizontal Demand

我覺得有少少係解釋緊點解firm in perfectly competitive market係price taker

The firm can sell any quantity it chooses at the market price, so marginal revenue equals price and the demand curve for the firm’s product is horizontal at the market price.

大學econ ppt


大學ppt都係咁講

其實我係咁諗
Demand horizontal = perfectly elastic demad
係perfectly competitive market
因為perfect info+homogeneous products
Firm一加價qd=0
所以firm係price takers
而demand curve=price
2017-04-20 22:31:59

係咪因為佢比左個nominal interest rate
所以就算佢actual inflation 係4%
nominal interest rate 都中係5%

本身我係咁諗
但係四個答案都唔啱
咁諗其實錯左咩

actual cost of holding money 永遠等於nominal interest rate



講返上面手寫張紙
要分返開個利率係指money定係bond
expected real interest rate用題目資料計係5-2=3, 但呢個係bond既expected real interest rate(return rate)黎
同理, actual bond real interest rate(return rate)係5-4=1
依家題目叫你搵actual cost of holding money, 你係唔可以用bond既real rate直接當做moeny既real rate, 兩個概念黎唔溝得埋
因為money本身假設做冇return, 而bond有return, 而portfolio假設左只可以持有呢兩種財富形式


成個問題應該係, 如果題目問actual cost of holding money, 可唔可以用
actual nominal interest rate去睇, 定係必須要照用expected nominal interest rate睇, 定係兩隻其實概念上冇必別, 仰或數值上兩者其實係相等

real interest rate可以分expected同actual, 咁nominal interest rate又得唔得?
expected nominal interest rate = expected real interest rate + expected inflation rate
咁actual real interest rate + actual inflation rate係咪=actual nominal interest rate??

nominal interest rate 冇分expected同actual

等我幫你清concept啦
嗱，而家你想借錢比人，咁收幾多interest 好？你要訂立一個nominal interest rate, using Fisher Equation:
借錢俾人所訂立的nominal interest rate= 你想收到嘅real interest rate + expected inflation rate

好喇，而家人地還咗錢，你想計下自己收嘅real interest rate 係咪真係你本身想收到嘅real interest rate，using this equation, which IS NOT fisher equation:
realized real interest rate= 訂立左嘅nominal interest rate - actual inflation rate

成個flow就係咁，由頭到尾nominal interest rate 只有一個，就係你自己訂立嗰個～～～～～～～


其實可以當fisher equation有兩條

一條係" 預期版 " 一條係" 真實版 "
預期版' : i = r(e) + △%p (e)
真實版：i =r(a) + △%p(a)
a for actual, e for expected (△%p係通脹率)
咁你做呢d q就只係照單執藥，佢話 expected inflation rate咪△%p (e) 囉。
佢問 real return rate咪 r (a) ,expected ge咪r (e)
唯一要知就人 i仔係 interchangeable in such equations

點解real interest rate可以分actual & expected而nominal interest rate唔得?
所謂冇actual nominal interest rate係咪即係指actual nominal interest rate其實係expected nominal interest rate
2017-04-20 22:35:32



同學仔如果對個d咩 holding cash(持有現金)
咩 expected inflation rate( 預期通脹率 )
感到好亂呢，可以背左呢張圖佢。

(資料來源 youtube karl yung)
同埋就好似上面SoA巴打講，i仔呢就係 md, ms圖ge y軸單位。 如呢個火柴人圖， cost of holding cash( 持有現金成本) = nominal interest rate ( 名義利率 )
其實佢同Ma有路。 ( md, ma, mt得ma downwards sloping)
上幾頁都討論過，當i仔升，你投資/擺錢入銀行回報會上升，所以你會放棄持有現金ge量去投資，賺$ , ma就係講緊一個咁ge關係
2017-04-20 22:37:33

係咪因為佢比左個nominal interest rate
所以就算佢actual inflation 係4%
nominal interest rate 都中係5%

本身我係咁諗
但係四個答案都唔啱
咁諗其實錯左咩

actual cost of holding money 永遠等於nominal interest rate



講返上面手寫張紙
要分返開個利率係指money定係bond
expected real interest rate用題目資料計係5-2=3, 但呢個係bond既expected real interest rate(return rate)黎
同理, actual bond real interest rate(return rate)係5-4=1
依家題目叫你搵actual cost of holding money, 你係唔可以用bond既real rate直接當做moeny既real rate, 兩個概念黎唔溝得埋
因為money本身假設做冇return, 而bond有return, 而portfolio假設左只可以持有呢兩種財富形式


成個問題應該係, 如果題目問actual cost of holding money, 可唔可以用
actual nominal interest rate去睇, 定係必須要照用expected nominal interest rate睇, 定係兩隻其實概念上冇必別, 仰或數值上兩者其實係相等

real interest rate可以分expected同actual, 咁nominal interest rate又得唔得?
expected nominal interest rate = expected real interest rate + expected inflation rate
咁actual real interest rate + actual inflation rate係咪=actual nominal interest rate??

nominal interest rate 冇分expected同actual

等我幫你清concept啦
嗱，而家你想借錢比人，咁收幾多interest 好？你要訂立一個nominal interest rate, using Fisher Equation:
借錢俾人所訂立的nominal interest rate= 你想收到嘅real interest rate + expected inflation rate

好喇，而家人地還咗錢，你想計下自己收嘅real interest rate 係咪真係你本身想收到嘅real interest rate，using this equation, which IS NOT fisher equation:
realized real interest rate= 訂立左嘅nominal interest rate - actual inflation rate

成個flow就係咁，由頭到尾nominal interest rate 只有一個，就係你自己訂立嗰個～～～～～～～


其實可以當fisher equation有兩條

一條係" 預期版 " 一條係" 真實版 "
預期版' : i = r(e) + △%p (e)
真實版：i =r(a) + △%p(a)
a for actual, e for expected (△%p係通脹率)
咁你做呢d q就只係照單執藥，佢話 expected inflation rate咪△%p (e) 囉。
佢問 real return rate咪 r (a) ,expected ge咪r (e)
唯一要知就人 i仔係 interchangeable in such equations

點解real interest rate可以分actual & expected而nominal interest rate唔得?
所謂冇actual nominal interest rate係咪即係指actual nominal interest rate其實係expected nominal interest rate

借錢比人要簽約（或者agreement啦）年頭定左一個% 年尾就算inflation 100%都冇得改 唔使分actual/expected nominal interest rate
real有分autual/expected都係因為inflation有actual/expected
2017-04-20 22:42:10
岩岩又做完成份2013 dse pp了
Mcq 23/40
Paper two 57.5/120

我好似連lv3嘅車尾燈都見唔到
Btw BOP一頭霧水
最後想問我同lv3距離仲有多少
謝 巴打們
2017-04-20 22:45:33
仲有想問下paper one paper two嘅比重點計？係咪由12年到而家都一樣？
費事次次上黎問啲低能野阻住巴打們討論
2017-04-20 22:45:43
岩岩又做完成份2013 dse pp了
Mcq 23/40
Paper two 57.5/120

我好似連lv3嘅車尾燈都見唔到
Btw BOP一頭霧水
最後想問我同lv3距離仲有多少
謝 巴打們


2013 其實paper2 幾難，當年條curve 好似76% 就lv5

btw加油，paper2 岩多d就得，70 到穩穩地
有咩唔明就問啦 唔係考完唔識後悔無問就
2017-04-20 22:47:35
仲有想問下paper one paper two嘅比重點計？係咪由12年到而家都一樣？
費事次次上黎問啲低能野阻住巴打們討論

p1:p2 3:7
唔肯定會唔會好似math咁因應個年份兩份papers嘅難度而稍微調整
2017-04-20 22:48:57

係咪因為佢比左個nominal interest rate
所以就算佢actual inflation 係4%
nominal interest rate 都中係5%

本身我係咁諗
但係四個答案都唔啱
咁諗其實錯左咩

actual cost of holding money 永遠等於nominal interest rate



講返上面手寫張紙
要分返開個利率係指money定係bond
expected real interest rate用題目資料計係5-2=3, 但呢個係bond既expected real interest rate(return rate)黎
同理, actual bond real interest rate(return rate)係5-4=1
依家題目叫你搵actual cost of holding money, 你係唔可以用bond既real rate直接當做moeny既real rate, 兩個概念黎唔溝得埋
因為money本身假設做冇return, 而bond有return, 而portfolio假設左只可以持有呢兩種財富形式


成個問題應該係, 如果題目問actual cost of holding money, 可唔可以用
actual nominal interest rate去睇, 定係必須要照用expected nominal interest rate睇, 定係兩隻其實概念上冇必別, 仰或數值上兩者其實係相等

real interest rate可以分expected同actual, 咁nominal interest rate又得唔得?
expected nominal interest rate = expected real interest rate + expected inflation rate
咁actual real interest rate + actual inflation rate係咪=actual nominal interest rate??

nominal interest rate 冇分expected同actual

等我幫你清concept啦
嗱，而家你想借錢比人，咁收幾多interest 好？你要訂立一個nominal interest rate, using Fisher Equation:
借錢俾人所訂立的nominal interest rate= 你想收到嘅real interest rate + expected inflation rate

好喇，而家人地還咗錢，你想計下自己收嘅real interest rate 係咪真係你本身想收到嘅real interest rate，using this equation, which IS NOT fisher equation:
realized real interest rate= 訂立左嘅nominal interest rate - actual inflation rate

成個flow就係咁，由頭到尾nominal interest rate 只有一個，就係你自己訂立嗰個～～～～～～～


其實可以當fisher equation有兩條

一條係" 預期版 " 一條係" 真實版 "
預期版' : i = r(e) + △%p (e)
真實版：i =r(a) + △%p(a)
a for actual, e for expected (△%p係通脹率)
咁你做呢d q就只係照單執藥，佢話 expected inflation rate咪△%p (e) 囉。
佢問 real return rate咪 r (a) ,expected ge咪r (e)
唯一要知就人 i仔係 interchangeable in such equations

點解real interest rate可以分actual & expected而nominal interest rate唔得?
所謂冇actual nominal interest rate係咪即係指actual nominal interest rate其實係expected nominal interest rate

借錢比人要簽約（或者agreement啦）年頭定左一個% 年尾就算inflation 100%都冇得改 唔使分actual/expected nominal interest rate
real有分autual/expected都係因為inflation有actual/expected

如果我借蘋果俾人
年頭定左一個(real)%, 年尾就算inflation 100%都冇得改, 所以唔使分actual/expected REAL interest rate???

expected即係事前即係今天決定, 如果real interest rate可以今天決定要明天再審視返, 點解nominal interest rate唔得?
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