作业帮宏观经济的问题Suppose firms become more optimistic about the future
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宏观经济的问题
Suppose firms become more optimistic about the future; as a result,the level
of investment increases by $15.Also,the MPC is equal to 0.8.求问 每个round 1,2,3：change in AE和change in Y 分别是多少.该怎么算?
Suppose firms become more optimistic about the future; as a result,the level
of investment increases by $15.Also,the MPC is equal to 0.8.求问 每个round 1,2,3：change in AE和change in Y 分别是多少.该怎么算?
1 15
2 15*0.8
3 15*0.8*0.8
再问： 那Y的变化量是多少呢？
再答： 第一期 +15 第二期 +15*0.8 第三期 +15*0.8*0.8 第n期 +15*0.8^(n-1) n->oo 15/(1-0.8)=75
2 15*0.8
3 15*0.8*0.8
再问： 那Y的变化量是多少呢？
再答： 第一期 +15 第二期 +15*0.8 第三期 +15*0.8*0.8 第n期 +15*0.8^(n-1) n->oo 15/(1-0.8)=75
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