三要素:定义域、值域、对应关系;两函数相等看定义域与对应关系。
We consider a dice game that played an important role in the historical development of probability. The famous letter…
一颗骰子扔 4 次,扔出 6 就赢——稳赚。两颗骰子扔 24 次,扔出双六就赢——他以为同理,结果稳赔。