X1+X2+X3+X4=5;X1+2X2-X3+4X4=-2;2X1-3X2-X3-5X4=-2;3X1+X2+2X3+
来源:学生作业帮 编辑:搜搜做题作业网作业帮 分类:数学作业 时间:2024/07/04 20:26:44
X1+X2+X3+X4=5;X1+2X2-X3+4X4=-2;2X1-3X2-X3-5X4=-2;3X1+X2+2X3+11X4=0;多谢
![X1+X2+X3+X4=5;X1+2X2-X3+4X4=-2;2X1-3X2-X3-5X4=-2;3X1+X2+2X3+](/uploads/image/z/17898980-68-0.jpg?t=X1%2BX2%2BX3%2BX4%3D5%3BX1%2B2X2-X3%2B4X4%3D-2%3B2X1-3X2-X3-5X4%3D-2%3B3X1%2BX2%2B2X3%2B)
不知道你学过线性代数木有
用矩阵比较简单
把方程依次编序号①②③④
③-2①+5(②-①)=-13X3+8X4=-47
④-3①+2(②-①)=-5X3+14X4=-29
解得X3=3 X4=-1
②-①=X2-2X3+3X3=-7 代入X3、X4得X2=2
将X2、X3、X4代入①得X1=1
用矩阵比较简单
把方程依次编序号①②③④
③-2①+5(②-①)=-13X3+8X4=-47
④-3①+2(②-①)=-5X3+14X4=-29
解得X3=3 X4=-1
②-①=X2-2X3+3X3=-7 代入X3、X4得X2=2
将X2、X3、X4代入①得X1=1
求线性方程组 x2-x3-x4=0 x1+x2-x3+3x4=1 x1-x2+x3+5x4=-1 x1+2x2-2x3+
.解线性方程组|X1+X2+X3+X4=5 |X1+2X2-X3+4X4=-2 |2X1-3X2-X3-5X4=-2 |
求齐次线性方程组{X1+X2+3X3+2X4=0 2X1+3X2+X3-X4=0 5X1+6X2+10X3+5X4=0}
解方程组X2+X3+X4=1 X1+X2+X3=5 X3+X4+X5=-5 X4+X5+X1=-3 X5+X1+X2=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
X1 - X3 - X4 -5X5=0 X1+2X2+3X3+3X4+7X5=0 X1+X2+X3+X4+X5=0 X2
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
X1+2X2-X3+X4=1
求齐次线性方程组x1+x2+2x3-x4=0 ,-x1-3x3+2x4=0 ,2x1+x2+5x3-3x4=0的一般解
求齐次线性方程组 x1+x2+2x3-x4=0 -x1-3x3+2x4=0 2x1+x2+5x3-3x4=0 的一般解.
求齐次线性方程组 X1+x2+2X3-X4=0 -X1 -3x3+2x4=0 2X1+X2+5X3-3X4=0的一般解,
求齐次线性方程组x1+x2+2x3-x4=0,-x1 -3x3+2x4=0,2x1+x2+5x3-3x4的一般解过程可以