历年数学一考研线性方程组部分.pdf

IP 59 77 1 116 1 n A r A n 1 AX 0 1993 2 a11 1a1 11a x1 x2 x3 1 1 2 a 2001 1 AX b 1 2 1 2 AX b X k1 k2 1990 A k1 1 k2 1 2 1 2 1 2 B k1 1 k2 1 2 1 2 1 2 C k1 1 k2 1 2 1 2 1 2 D k1 1 k2 1 2 1 2 1 2 2 A 1 1 0 2 2 0 1 1 AX 0 1992 A 2 1 1 B 20 1 011 C 102 01 1 D 01 1 4 2 2 011 3 A B m n n m AB x 0 2002 1 A n m B n m C m n B m n 4 Ax 0 Bx 0 A B m n 4 1 Ax 0 Bx 0 A B 2 A B Ax 0 Bx 0 3 Ax 0 Bx 0 A B 4 A B Ax 0 Bx 0 2003 A 1 2 B 1 3 C 2 4 D 3 4 5 n A A 6 0 1 2 3 4 Ax B Ax 0 2004 A B C D 6 A 1 2 3 4 4 A A 1 0 1 0 T Ax 0 A x 0 2011 A 1 3 B 1 2 C 1 2 3 D 2 3 4 1 a b x1 x2 x3 x4 0 x2 2x3 2x4 1 x2 a 3 x3 2x4 6 3x1 2x2 x3 ax4 1 1987 2 x1 x3 4x 1 x2 2x3 2 6x1 x2 4x3 2 3 1989 2 3 1 x1 x2 0 x2 x4 0 2 k1 0 1 1 0 k2 1 2 2 1 a 1 b 1 2 1994 4 B 2 5 4 1 1 1 2 3 2 1 4 1 3 5 1 8 9 BX 0 BX 0 1997 5 1 a11x1 a12x2 a12nx2n 0 a21x1 a22x2 a22nx2n 0 an1x1 an2x2 an2nx2n 0 1 b11 b12 b12n 2 b21 b22 b22n n bn1 bn2 bn2n 2 b11y1 b12y2 b12ny2n 0 b21y1 b22y2 b22ny2n 0 bn1y1 bn2y2 bn2ny2n 0 1998 6 1 2 1 1 1 2 0 0 0 8 A B 2B2A2x A4x B4x 2000 7 1 2 s AX 0 1 t1 1 t2 2 2 t1 2 t2 3 s t1 s t2 1 t1 t2 t1 t2 1 2 s AX 0 2001 8 4 A 1 2 3 4 1 2 3 4 4 2 3 4 1 2 2 3 1 2 3 4 AX 2002 9 l1 ax 2by 3c 0 3 l2 bx 2cy 3a 0 l3 cx 2ay 3b 0 a b c 0 2003 10 1 a x1 x2 xn 0 2x1 2 a x2 2xn 0 nx1 nx2 n a xn 0 n 2 a 2004 11 3 A a b c a b c B 123 246 36k k AB 0 Ax 0 2005 12 x1 x2 x3 x4 1 4x1 3x2 5x3 x4 1 ax1 x2 3x3 bx4 1 3 I A r A 2 II a b 2006 13 x1 x2 x3 0 x1 2x2 ax3 0 x1 4x2 a2x3 0 x1 2x2 x3 a 1 a 2007 14 n Ax b A 2a1 00 a22a 00 00 2a1 00 a22a A n x x1 x2 xn T b 1 0 0 T 1 A n 1 an 2 a x1 3 a 2008 4 15 A 1 1 1 111 0 4 2 1 1 1 2 T 1 A 2 1A2 3 1 2 3 2 1 2 3 1 2 3 2009 16 A 11 0 10 11 b a 1 1 T Ax b 1 a 2 Ax b 2010 17 1 1 0 1 T 2 0 1 1 T 3 1 3 5 T