mathnew 发表于 2012-2-18 14:36 ; w' l( D9 w; t由于刚注册还不能发帖,我想请教一下:3 E2 i1 x$ v0 G% C8 Z6 ?' F9 O " i _+ M; M* @" E0.1^(a*0.1)+0.1^(a*0.2)+0.1^(a*0.3)=10159/5337