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作者: hanon0060 時間: 2015-9-19 03:25 PM 標題: delete

delete

[ 本帖最後由 hanon0060 於 2018-5-25 09:49 AM 編輯 ]

作者: pnpf 時間: 2015-9-20 03:53 PM

saving must be zero

作者: williamEX 時間: 2015-10-31 02:58 AM

呢條睇你識唔識高考經濟定義的。。。。

C = Consumption
C bar = autonomous consumption
c = propensity to consume

S = Saving
S bar = autonomous saving
s = propensity to save

Yd = disposal income

C = C bar + c * Yd
S = S bar + s * Yd

disposal income can either be consumed or saved
Yd = C+S

So
C bar = - S bar
c+s = 1

If Yd = 0
C = C bar
S = S bar

C bar must be > = 0
S bar must be < = 0

Answer is therefore "None of the above"

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