红椒然西数，2-名和。-“名 nL(() d 2x,=n2 =Σx, K网    − = = e x! ( ) L( ) n xi i 1 2 似然函数： x! e n xi i n    =1 − =   = = = − + − n i i n i i l nL( ) n x l n ln( x ! ) 1 1    0 1 1 = − +  = = n i n xi d d l nL( )    = = n i xi n 1  . ˆ x x n n i  i = = = 1 1 