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发表于 2021-4-6 13:02:20
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span style="white-space:normal;text-transform:none;word-spacing:0px;float:none;color:rgb(51,51,51);font:16px/28px 'zuoyeFont_mathFont', 'Microsoft Yahei', '宋体', sans-serif;letter-spacing:normal;background-color:rgb(255,255,255);text-indent:0px;">解:（1）由U=XY,得MUX=Y,MUY=X,根据消费者均衡条件得Y/2=X/3</span><br style="white-space:normal;text-transform:none;word-spacing:0px;color:rgb(51,51,51);font:16px/28px 'zuoyeFont_mathFont', 'Microsoft Yahei', '宋体', sans-serif;letter-spacing:normal;background-color:rgb(255,255,255);text-indent:0px;"/><span style="white-space:normal;text-transform:none;word-spacing:0px;float:none;color:rgb(51,51,51);font:16px/28px 'zuoyeFont_mathFont', 'Microsoft Yahei', '宋体', sans-serif;letter-spacing:normal;background-color:rgb(255,255,255);text-indent:0px;">考虑到预算方程为2X+3Y=120</span><br style="white-space:normal;text-transform:none;word-spacing:0px;color:rgb(51,51,51);font:16px/28px 'zuoyeFont_mathFont', 'Microsoft Yahei', '宋体', sans-serif;letter-spacing:normal;background-color:rgb(255,255,255);text-indent:0px;"/><span style="white-space:normal;text-transform:none;word-spacing:0px;float:none;color:rgb(51,51,51);font:16px/28px 'zuoyeFont_mathFont', 'Microsoft Yahei', '宋体', sans-serif;letter-spacing:normal;background-color:rgb(255,255,255);text-indent:0px;">解得X=30,Y=20</span><br style="white-space:normal;text-transform:none;word-spacing:0px;color:rgb(51,51,51);font:16px/28px 'zuoyeFont_mathFont', 'Microsoft Yahei', '宋体', sans-serif;letter-spacing:normal;background-color:rgb(255,255,255);text-indent:0px;"/><span style="white-space:normal;text-transform:none;word-spacing:0px |
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发表于 2021-4-22 09:23:21