有m爱 and E(longevity of 爱) => 肯出f(m)钱

来源: 随便一点 于 2010-01-28 13:57:15 [] [博客] [旧帖] [给我悄悄话] 阅读数 : (182 bytes)
本帖于 2010-09-28 08:04:20 时间, 由超管 论坛管理 编辑

f(m) is an increasing function defined by individuals.
E(x) is the expected value of x.

Note that it is not necessary true that

肯出（m）钱 =〉有f'(m)爱


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