→ gdchess : 令joint pdf =f(c1,c2,...cn) 08/31 10:43
→ gdchess : E[C]=$$(c1+c2.....cn) f(c1,c2...cn)dc1dc2....dcn 08/31 10:45
→ gdchess : 因為c1,..cn,彼此獨立f(c1,c2...cn)=f(c1)f(c2)... 08/31 10:46
→ gdchess : $f(ci)dci=1 for i=1...n 08/31 10:47
→ gdchess : E[C]=$c1f(c1)dc1+$c2f(c2)dc2..$cnf(cn)dcn 08/31 10:48
→ gdchess : ->E[C]=E[c1]+E[c2]...E[cn] where $ 為積分符號 08/31 10:49
→ Pieteacher : 獨立 f(x1,...,xq)=f(x1)...f(xq) 再利用積分的 lin 08/31 16:08
→ Pieteacher : earity 08/31 16:08