就是那本书的34页，你直接找到就可以了。

哦，我里面 X 是酒，Y是冰淇淋
这无差异曲线怎么画哦？毫无头绪

我也不会，有答案共享啊

原文是这样的

Suppose that Dean!ˉs preference over monthly conumption of wine and gelato are as follows.
He considers both wine and gelato as goods and has usual preferences as long as he does not
have too much of them.  However, he considers having any more than 20 bottles of wine in a
month excessive and bad for his health. Similarly, he considers having any more than 45
gelati in a month bad for his health. Based on this information, answer the following
questions:
a)  Draw a sample indifference curve map for Dean showing 2 indifference curves. Label
them and rank them in terms of utility levels. Explain the shape of one of the
indifference curves and your ranking.


请教大虾呐

可能是餍足的偏好吧，并且是在（20，45）点的下面部分的区域，越靠近点的效用水平越大。你可以参考一下范里安《现代观点》34页。