线性方程组x1-3x2-2x3-x4=1,3x1-8x2-4x3-x4=0,-2x1+x2-4x3+2x4=1,-x1-

来源：学生作业帮编辑：作业帮分类：数学作业时间：2024/11/05 14:39:36

线性方程组x1-3x2-2x3-x4=1,3x1-8x2-4x3-x4=0,-2x1+x2-4x3+2x4=1,-x1-2x2-6x3+x4=2一般解 X是字母x

解: 增广矩阵 =
1 -3 -2 -1 1
3 -8 -4 -1 0
-2 1 -4 2 1
-1 -2 -6 1 2
r2-3r1,r3+2r1,r4+r1
1 -3 -2 -1 1
0 1 2 2 -3
0 -5 -8 0 3
0 -5 -8 0 3
r4-r3,r3+5r2,r1+3r2
1 0 4 5 -8
0 1 2 2 -3
0 0 2 10 -12
0 0 0 0 0
r1-2r3,r2-r3,r3*(1/2)
1 0 0 -15 16
0 1 0 -8 9
0 0 1 5 -6
0 0 0 0 0
方程组的解为: (16,9,-6,0)'+c(15,8,-5,1)'.
满意请采纳^_^

求线性方程组 x2-x3-x4=0 x1+x2-x3+3x4=1 x1-x2+x3+5x4=-1 x1+2x2-2x3+ 求齐次线性方程组x1+2x2+x3+x4+x5=1 2x1+4x2+3x3+x4+x5=2 -x1-2x2+x3+3x4 求非齐次线性方程组：2x1-x2+4x3-3x4=-4;x1+x3-x4=-3;3x1+x2+x3=1;7x1+7x3- 设齐次线性方程组:x1+x2+x3+x4=0,x2-x3+2x4=0,2x1+3x2+(a+2)x3+4x4=0,3x1 解线性方程组求齐次线性方程组X1+X2+X3+X4=0,2X1+3X2+4X3+5X4=0,4X1+5X2+6X3+7 用列主元Gauss消元法解线性方程组{-x2-x3+x4=0,x1-x2+x3-3x4=1,2x1-2x2-4x3+6x 求非齐次线性方程组的通解：2x1+x2-x3-x4=1;2x1+x2+x3-x4=1;4x1+2x2+x3-2x4=2 .解线性方程组｜X1+X2+X3+X4=5 ｜X1+2X2-X3+4X4=-2 ｜2X1-3X2-X3-5X4=-2 ｜解线性方程组求齐次线性方程组X1+X2+X3+X4=0,2X1+3X2-X3-2X4=0,5X1+6X2+2X3+X4 奇次线性方程组x1-2x2+3x3-4x4=0 x2-x3+x4=0 x1+3x2-kx4=0 -7x2+kx3+x4= 线性方程组线性方程组1x1+x2 -2x4=-64x1-x2-x3-x4=13x1-x2-x3 =3方程组2X1+MX 求线性方程组{X1+X2+2X3-3X4=0; X1+2X2-X3+2X4=0; 2X1+3X2+X3-X4=0}的基础