Re: [問題] 今年貨銀的第一題
小弟來分享一下我的寫法QQ
直接回文教方便
第一小題
原題目: 通貨C=2500 準備性存款R=500
由於準備存款R=存款貨幣D*準備率rd
所以我逆推D=500/rd
然後簡單定義的貨幣供給M=C+D=2500+500/rd
M帶題目要的5千 -> 5000=2500+500/rd
求出準備率rd=0.2
第二小題
目前實際rd為0.1 所以用上面用的公式可以求出目前貨幣供給
M=2500+500/0.1=7500
題目要求使用公開市場操作(買賣公債)
要求要降低M到5000
所以要先求出貨幣乘數 m=M/H
H=C+R=2500+500=3000
M=7500
所以可以求出貨幣乘數=7500/3000=2.5
然後得出貨幣供給創造式M=2.5*H
目標是減少貨幣供給2500
所以要使得強力貨幣減少1000
所以在公開市場操作賣出公債1000 等量收回通貨1000
達成貨幣供給5000
小弟拙見...
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