000 2000 00 1-67 00 000 2000 00 0 0 000 000 00 0010 00 000 2000 001 U 00 002-00 0 2021/2/20
2021/2/20 11 1 2 1 1 1 1 2 1 1 1 0 0 1 1 1 0 0 1 1 1 0 0 0 6 0 0 0 0 1 0 0 0 0 7 0 0 0 0 0 0 1 2 1 0 1 1 2 0 0 2 0 0 1 0 1 0 0 1 0 1 0 0 0 1 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 U - - - - → - - → → =
2002 0010-1 00010 00000 U=O即|x+2x2+ 2x 000 x2和x5为自由变元,令x2=k,x5=k2,k 为任意常数,则x1=2k1-2k2,x3=k2,x4=0 2021/2/20
2021/2/20 12 UX=O即 1 2 5 3 5 4 2 2 0 0 0 x x x x x x + + = - = = x2和x5为自由变元, 令x2 =k1 , x5 =k2 , k1 ,k2 为任意常数, 则x1=-2k1-2k2 , x3 =k2 , x4=0. 1 2 0 0 2 0 0 1 0 1 0 0 0 1 0 0 0 0 0 0 U - =