Posted by haifeng on 2014-10-09 19:37:12 last update 2014-12-11 11:12:58 | Answers (1) | 收藏
求下面的行列式
\[ \begin{vmatrix} 1+a_1+b_1 & a_1+b_2 & \cdots & a_1+b_n\\ a_2+b_1 & 1+a_2+b_2 & \cdots & a_2+b_n\\ \vdots & \vdots & & \vdots\\ a_n+b_1 & a_n+b_2 & \cdots & 1+a_n+b_n\\ \end{vmatrix} \]
