價格變動率與總收益之關係 - 經濟

By Anonymous
at 2018-06-28T12:59
at 2018-06-28T12:59
Table of Contents
https://i.imgur.com/dSYSh4T.jpg
在書上看到這題,公式上我懂,但在邏輯上我怎麼樣都想不通。若價格上漲20%,銷售量
減少18%,則TR=P x Q=P(1+20%) x Q(1-18%)=PQ x 0.984 ,怎麼看都是總收益減少啊......
還請板上大大幫忙解惑,謝謝
--
在書上看到這題,公式上我懂,但在邏輯上我怎麼樣都想不通。若價格上漲20%,銷售量
減少18%,則TR=P x Q=P(1+20%) x Q(1-18%)=PQ x 0.984 ,怎麼看都是總收益減少啊......
還請板上大大幫忙解惑,謝謝
--
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