送交者: Rodger 于 2006-4-05, 11:59:58:

回答: 新到中xj关于error bar的解释有一问题 由 littlebird 于 2006-4-05, 11:13:02:

It is the same to prove sum of squares is smaller than square of sum, given all elements are larger than 0.

加跟贴