2.用行列式的性质证明下列等式:-|||-_(1)+k(b)_(1) _(1)+(c)_(1) 1 1 b1 C1-|||-(1) _(2)+k(b)_(2) _(2)+(c)_(2) 2 = 2 2 C2 ;-|||-_(3)+k(b)_(3) b3+c3 c 3 a3 3 3-|||--ab ac ae-|||-(2) bd -cd de =4abcdef;-|||-bf cí -ef-|||-1+x 1 1 1-|||-1 1+x 1 1 =x^2y^2+22xy^2+2x^2y.-|||-(3)-|||-1 1 1+y 1-|||-1 1 1 1+y

2.设行列式 |} (a)_(1)& (b)_(1) (a)_(2)& (b)_(2) |= () .-|||-=-|||-(A) -3; (B) -1 ; (

若行列式1 1 1-|||-a b c neq 0-|||-a^2 b^2 c^2，则（ ）若行列式，则（）A.B.不全相等C.全不相等D.

C1 C2 C3 = a2 b2 C2-|||-a3 b3 C3-|||-a1 b1 C1-|||-(2) |} (b)_(1)+(c)_(1)& (c)_

利用行列式的性质证明: ((a+1))^2-|||-((a+2))^2-|||-((a+3))^2-|||-((b+1))^2-|||-((b+2))^2-||

b=1 (B) =2, b=-1 (C) =-2. b=1 (D) =-2, b=-1

计算行列式1 1 1-|||--2 1 2-|||-4 1 4=A 24 B 48 C 6 D 12计算行列式=A24B48C6D12

设 b1 C1-|||-D= .2 b2 2 =6-|||-3a3 b3 C3，则 b1 C1-|||-D= .2 b2 2 =6-|||-3a3 b3 C3=

下列行列式中哪一个与其他行列式不等A.1 。: 3-|||-1 1 2-|||-2 3 4B.1 。: 3-|||-1 1 2-|||-2 3 4C.1 。:

) ( )-|||-(A) =pm (2k+1) (B) =pm 2k-|||-(C) =pm dfrac (1)(2)(2k+1) (D) =pm dfrac

4.计算下列各行列式:-|||-4 1 2 4-|||-(1) 1 2 0 2-|||-10 5 2 0-|||-0 1 1 7-|||-1 1 1-|||-(