2X1-4X2+5X3+3X4=0 3X1-6X2+4X3+2X4=0 4X1-8X2+17X3+11X4=0 解以上线性方程组
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![2X1-4X2+5X3+3X4=0 3X1-6X2+4X3+2X4=0 4X1-8X2+17X3+11X4=0 解以上线性方程组](/uploads/image/z/7650535-31-5.jpg?t=2X1-4X2%2B5X3%2B3X4%3D0+3X1-6X2%2B4X3%2B2X4%3D0+4X1-8X2%2B17X3%2B11X4%3D0+%E8%A7%A3%E4%BB%A5%E4%B8%8A%E7%BA%BF%E6%80%A7%E6%96%B9%E7%A8%8B%E7%BB%84)
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2X1-4X2+5X3+3X4=0 3X1-6X2+4X3+2X4=0 4X1-8X2+17X3+11X4=0 解以上线性方程组
2X1-4X2+5X3+3X4=0 3X1-6X2+4X3+2X4=0 4X1-8X2+17X3+11X4=0 解以上线性方程组
2X1-4X2+5X3+3X4=0 3X1-6X2+4X3+2X4=0 4X1-8X2+17X3+11X4=0 解以上线性方程组
系数矩阵 =
2 -4 5 3
3 -6 4 2
4 -8 17 11
r2-r1,r3-2r1
2 -4 5 3
1 -2 -1 -1
0 0 7 5
r1-2r2
0 0 7 5
1 -2 -1 -1
0 0 7 5
r3-r1,r1*(1/7),r2+r1
0 0 1 5/7
1 -2 0 -2/7
0 0 0 0
交换行
1 -2 0 -2/7
0 0 1 5/7
0 0 0 0
方程组的通解为:c1(2,1,0,0)'+c2(2,0,-5,7)
用初等行变换来解下列线性方程组(1)2x1-x2+3x3=3 3x1+x2-5x3=0 4x1-x2+x3=3 x1+3x2-13x3=-6(2) x1-2x2+x3+x4=1 x1-2x2+x3-x4=-1 x1-2x2+x3-5x4=5(3) x1-x2+x3-x4=1 x1-x2-x3+x4=0 x1-x2-2x3+2x4=-1/2
线性代数题,求详解设X1,X2,X3,X4是方程X^4+3X^2+4X+5=0的四个根,求D=| X1 X2 X3 X4 | 的值| X4 X1 X2 X3 || X3 X4 X1 X2 || X2 X3 X4 X1 |
求下面线性规划问题的对偶问题maxZ=x1+x2+2x3+x42x1+3x2+x3-x4≤5x1-x2+6x3+x4≥7x1+x2= -4x1,x3≥0,x2≤0,x4无约束马上要考试落.求下面线性规划问题的对偶问题maxZ=x1+x2+2x3+x42x1+3x2+x3-x4≤5x1-x2+6x3+x4≥7x1+x2= -4x
解线性方程组 X1-2X2+3X3-4X4=0 X2-X3+X4=0 X1+3X2-3X4=0 X解线性方程组X1-2X2+3X3-4X4=0X2-X3+X4=0X1+3X2-3X4=0X1-4X2+3X3-2X4=0
.解线性方程组|X1+X2+X3+X4=5 |X1+2X2-X3+4X4=-2 |2X1-3X2-X3-5X4=-2 |3X1+X2+2X3+11X4=0
用克拉默法则解方程组 X1+X2+X3+X4=5 X1-2X2-X3+4X4=-2 2X1-3X2-X3-5X4=-2 3X1+X2+2X3+11X4=0
X1+X2+X3+X4=5;X1+2X2-X3+4X4=-2;2X1-3X2-X3-5X4=-2;3X1+X2+2X3+11X4=0;多谢
求解齐次线性方程组 2x1+3x2-x3-7x4=0 3x1+x2+2x3-7x4=0 4x1+求解齐次线性方程组2x1+3x2-x3-7x4=03x1+x2+2x3-7x4=04x1+x2-3x3+6x4=0x1-2x2+5x3-5x4=0
用消元法解方程组x1+x2-2x2=-3,5x1-2x2+7x3=22.2x1-5x2+4x3=4 是字母x.x1+2x2-x3-2x4=0,2x1-x2-x3+x4=1,3x1+x2-3x3-x4=1
求解齐次线性方程组 2x1+3x2-x3-7x4=0 3x1+x2+2x3-7x4=0 4求解齐次线性方程组 2x1+3x2-x3-7x4=03x1+x2+2x3-7x4=04x1+x2-3x3+6x4=0x1-2x2+5x3-5x4=0
2X1+X2-X3+X4=13X1-2X2+X3-3X4=4X1+4X2-3X3+5X4=-2X1+X2+X3+X4=0X1+2X2+4X3+4X4=02X1+3X2+5X3+5X4=0
1.用基础解系表示线性方程组的通解X1 +2X2+3X3-X4=13X1+2X+X3-X4=1 2X1+3X2+X3+X4=12X1+2X2+2X3-X4=15X1+5X2+2X3=22.3 1 0A= -4 -1 0 的特征值和特征向量.4 -8 2 1.用基础解系表示线性方程组的通解X1 +2X2+3X3-X4=13X1+2X2+X3-X
用矩阵法姐方程组:2x1-3x2 +x 3-x4 =3 3x 1+x2 +x3 +x 4=0 4x1 -x2 -x 3-x4 =7 -2x 1-x3 +x3 +x4 =-5
用基础解系表示线性方程组的全部解(1)【2x1-x2+x3-2x4=1 】(2) 【x1-2x2+x3=-5】 (3) 【x1-x2-x3+x4=0】【-x1+x2+2x3+x4=0 】 【x1+5x2-7x3=2】 【x1-x2+x3-3x4=1】【x1-x2-2x3+2x4=-0.5 】 【3x1+x2-5x3=-8】 【x1-x2-2x
运筹学 将下列线性规划问题化为标准型.Minz=-3x1+4x2-2x3+5x4 4x1-x2+2x3-x4=-2 x1+x2-x3+2x4=2 x1*x2>=0 x3
线性代数,x1+x2-3x3-x4=0 3x1-x2-3x3+4x4=0 x1+5x2-9x3-8x4=0
解线性方程组x1+x2+x3+x4=2;2x1+3x2+4x3+3x4=5;x1+3x2+5x3+3x4=4
求齐次线性方程组 X1+X2-X3-X4=0 2X1-5X2+3X3+2X4=0 7X1-7X2+3X3+X4=0