(2尼已知α=a0,求参数β的最大似然估计值。 L(B)=nBo e 厂(a) n I 1,-Bx e /r(a)"=1 hnL(B)= n ao In B-nmr(a)+(ao-1)∑mx;-∑Bx d In l(B) na d B ∑x1=0→B. x ˆ x n d )(Llnd xln)()(lnnlnn)(Lln x ex )]([ ex )( )(L )( n i i n i i n i i x i n i n n x i n i i i 0 1 0 1 1 0 0 1 1 1 1 0 0 1 2 0 0 0 0 α β βα β β βαβ ααΓ β Π αΓ β αΓ β Πβ α α β α β α α β α =⇒=−= = − −+ − = = = ∑ ∑∑ = = = −− = −− = 已知 ，求参数 的最大似然估计值