7.计算下列行列式.-|||-1 a1 0 0 0-|||--1 https:/img.zuoyebang.cc/zyb_c0430b49f154f76d3d20ee368f054b21.jpg-(a)_(1) a2 0-|||-0 -1 https:/img.zuoyebang.cc/zyb_c0430b49f154f76d3d20ee368f054b21.jpg-(a)_(2) 0 0-|||-(4) ;-|||-: :-|||-0 0 0 1 -an-1 an-|||-0 0 0 -1 1 -an

(B) https:/img.zuoyebang.cc/zyb_f136f6e023bb215619f3c76c1be07936.jpggt 0. (C) ht

计算下列行列式的值；a 1 0 0-|||--1 b 1 0-|||-0 -1 c 1-|||-0 0 -1 d；计算下列行列式的值；；

θ^2 .https:/img.zuoyebang.cc/zyb_cc1d55810cc7d52776d9633cf4097f0a.jpg-20-|||-其中

设线性方程组_(1)+(x)_(2)+(x)_(3)=0-|||-x https:/img.zuoyebang.cc/zyb_11f7ffe17b3d923f0

3.求下列矩阵的逆矩阵和行列式:-|||--5 2 0 0 7-|||-2 1 0 0-|||-(1) A=-|||- 1 -2 ;-|||- 0 1 http

5-12 用SO2含量为 https:/img.zuoyebang.cc/zyb_434dea94d0f8a0c38b72f7c69f32418d.jpg.1t

设矩阵https:/img.zuoyebang.cc/zyb_03ea0845c31a32a49a93741932d44056.jpg-1 1-|||-A=

https:/img.zuoyebang.cc/zyb_c0fbf0d3ab9a0b30a20e47b6f2b25ba5.jpg-a-|||-C.α^2 D.

计算下列行列式a 1 0 0-1 b 1 00 -1 c 10 0 -1 d计算下列行列式a 1

6.总体X的概率分布为-|||-x 0 1 2 3-|||-P θ^2 (1-0) θ^2 https:/img.zuoyebang.cc/zyb_d23f4d