x,y,z could be any numbers. for exp: x=y=z=0.

來源: jinjing 於 2012-10-20 21:24:54 [] [舊帖] [給我悄悄話] 閱讀數 : (203 bytes)
回答: Two problems 由 藍糊塗 於 2012-10-18 16:46:50

(w-5)(w-7)(w-8)[-(w-2)(w-3)(w-4)w-6)110/7!+(w-1)(w-3)(w-4)(w-6)20/6!-(w-1)(w-2)(w-4)(w-6)12/(2!5!)+(w-1)(w-2)(w-3)(w-6)/(3!4!)-(w-1)(w-2)(w-3)(w-4)6/(5!2!)]=P(w)

P(1)=20,P(2)=20,...P(8)=0.

請您先登陸，再發跟帖！