题目内容

假定某经济社会的消费函数c＝30＋0.8yd，净税收即总税收减去政府转移支付后的金额tn＝50，投资i＝60，政府购买性支出g＝50，净出口即出口减进口以后的余额为nx＝50－0.05y，求：(1)均衡收入；(2) 在均衡收入水平上净出口余额；(3)投资乘数；(4)投资从60增至70时的均衡收入和净出口余额；(5)当净出口从nx＝50－0.05y变为nx ＝ 40－0.05y时的均衡收入和净出口余额。

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