送交者: NE0 于 2005-11-03, 10:41:34:
回答: 昏昏混事儿呢?证明派是无限不循环。 由 无知 于 2005-11-01, 16:42:50:
π is Irrational
Here's a back-of-an-envelope (ok, back of a CD packet) proof of the nearly mythical theorem that the number π (pi) is irrational, originally proven by Lambert in 1770。