x1-2x2+3x3-4x4=4
x2-x3+x4=-3
x1+3x2+2x4=1
-7x2+3x3+x4=3
...x1-2x2+3x3-4x4=4 x2-x3+x4=-3 x1+3x2+2x4=1 -7x2+3x3+x4=3_百度...
利用初等变换,将矩阵变换然后简化,解同解方程组。| 1 -2 3 -4 4 | | 0 1 -1 1 -3 | | 1 3 0 2 1 | | 0 -7 3 1 3 |
解线性方程组 x1-2x2+3x3-4x4=4, 0+x2-x3+x4=-3, x1+3x3+0+x4=1
0+x2-x3+x4=-3 x1+3x3+0+x4=1 0-7x2+3x3+x4=-3 D= 1 -2 3 -4 0 1 -1 1 1 3 0 1 0 -7 3 1 =16 D1= 4 -2 3 -4 -3 1 -1 1 1 3 0 1 -3 -7 3 1 =-128 D2= 1 4 3 -4 0 -3 -1 1 1 1 0 1 0 -3 3 1 =48 D3= 1 -2 4 -4 0 1 ...
解线性方程组 x1-2x2+3x3-4x4=4, 0+x2-x3+x4=-3, x1+3x3+0+x4=1, 0...
解得x1=-8 ,x2=3,x3=6,x4=0
解线性方程组 X1-2X2+3X3-4X4=0 X2-X3+X4=0 X1+3X2-3X4=0 X1-4X2+3X...
{x1 = 0, x2 = x2, x3 = 2*x2, x4 = x2}
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=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X1-2X2+3X3-4X4=0X2-X3+X4=0X1+3X2-3X4=0X1-4X2+3X3-2X4=0 展开 ...
...2x2-x3+x4=4 4x1+3x2-x3+2x4=16 8x1+3x2-3x3+4x4=12 3x1+3x2-2x3...
∴ x1=D1\/D=37\/7 、x2=D2\/D=3、x3=D3\/D=11、x4=D4\/D=-11\/7 定义 线性方程也称为一次方程,因为在笛卡尔坐标系上任何一个一次方程的表示都是一条直线。组成一次方程的每个项必须是常数或者是一个常数和一个变量的乘积。且方程中必须包含一个变量,因为如果没有变量只有常数的式子是算数...
用克拉默法则解下列方程组 5x1+4x2+2x4=3,x1-x2+2x3+x4=1,4x1+x2+2...
xi=Di\/D,Di由D中第i列替换为等式右边的值
...方程组 x1-2x2+3x3-x4=0 3x1-x2-3x3+4x4=4 x1+5x2-9x3-8x4=0_百度...
5z+5s+x8+9z+x9=8 348x9+9x+9y+510x=9
用克拉默法则解线性方程组X1-X2-X3-2X4=-1,X1+X2-2X3+X4=1,X1+X2 =...
X1-X2-X3-2X4=-1,X1+X2-2X3+X4= 1,X1+X2 =2,+X2 +X3-X4 =1 D= | 1 -1 -1 -2 | | 1 1 -2 1 | | 1 1 0 0 | | 0 1 1 -1 | = | 1 -1 -1 -2 | | 0 2 -1 3 | | 0 2 1 2 | | 0 1 ...
求方程x1-2x2+3x3-4x4=1的通解
x1-2x2+3x3-4x4=1 x-4+9-16=1 x-11=1 x=12