求解线性方程组:x1+x2+x3=6 2x1-x2+3x3=9 2x1+3x2-2x3=2
来源:学生作业帮助网 编辑:作业帮 时间:2024/11/05 17:26:48
xRJ@w6Y$
)%" `)գBM/817%̼&/IGm>-bE:x9UG*g A )Tzd?&Da-ź{|~1WaEIS&"oHZ?|1I
"u DТյ3&Cewv$G"D
Ī&to2xq>ެfu8T{;it2:<KM+Z!.T3^*ƺ 0v!%^bqIC"DFt̀s)١
lVdf`u6qo oO9g=& ˲32]\X%
求解线性方程组:x1+x2+x3=6 2x1-x2+3x3=9 2x1+3x2-2x3=2
求解线性方程组:x1+x2+x3=6 2x1-x2+3x3=9 2x1+3x2-2x3=2
求解线性方程组:x1+x2+x3=6 2x1-x2+3x3=9 2x1+3x2-2x3=2
增广矩阵 =
1 1 1 6
2 -1 3 9
2 3 -2 2
r2-2r1,r3-2r1
1 1 1 6
0 -3 1 -3
0 1 -4 -10
r1-r3,r2+3r3
1 0 5 16
0 0 -11 -33
0 1 -4 -10
r2*(-1/11),r1-5r2,r3+4r2
1 0 0 1
0 0 1 3
0 1 0 2
所以 X=(1,2,3)^T.
x1+x2+x3=6 1)
2x1-x2+3x3=9 2)
2x1+3x2-2x3=2 3)
2)-3): -4x2+5x3=7 4)
1)*2-2): 3x2-x3=3 5)
4)+5)*5: 11x2=22
x2=2
代入5): x3=3x2-3=3
代入1: x1=6-x2-x3=1
故解为:x1=1,x2=2, x3=3
求解线性方程组 X1+X2+X3=6 2X1+3X2+X3=11 X1-X2+2X3=5
线性方程组求解,x1+2x2+x3-x4=1 3x1+6x2-x3-3x4=0
求解线性方程组:x1+x2+x3=6 2x1-x2+3x3=9 2x1+3x2-2x3=2
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
求解非齐次线性方程组的通解 X1+X2-2*X4=-6 4*X1-X2-X3-X4=1 3X1-X2-X3=3
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
求解非齐次线性方程组x1+x2+x3=3,x2-x3=0,-x1-x2+2x3=0,2x1-x2+x3=2
线性方程组求解 2x1-x2+3x3=3 3x1+x2-5x3=0 4x1-x2+x3=3 x1+3x2-13x3=-6
线性方程组求解 2x1-x2+3x3=3 3x1+x2-5x3=0 4x1-x2+x3=3 x1+3x2-13x3=-6用矩阵的方法
求解线性方程组 2X1+X2-X3+X4=1 4X1+2X2-2X3+2X4=2 2X1+X2-X3-X4=1 的通解
求解齐次线性方程组...X1+X2+2X3-X4=0{ 2X1+X2+X3-X4=02X1+2X2+X3+2X4=0
用逆矩阵的方法求解线性方程组{x1-x2-x3=2 2x1-x2-3x3=4 3x1+2x2-5x3=9}
用逆矩阵的方法求解线性方程组 x1-x2-x3=2 2x1-x2-3x3=4 3x1+2x2-5x3=9
求解非齐次线性方程组x1-2x2+x3+x4=1,x1-2x2+x3-x4=-1,x1-2x2+x3-5x4=5的解
求解下列非齐次线性方程组!x1-2x2+3x3-x4=13x1-x2+5x3-3x4=22x1+x2+2x3-2x4=3
求解线性方程组-x1+x2+2x3=1;x1-x2+x3=2;5x1-5x2-4x3=1
求解线性方程组:X1+2X2+X3=8,2X1+3X2+X3=11,X1+3X2+3X3=16.
线性代数 2X1 - X2 +X3-X4=0 求解线性方程组 { 2X1-X2-3X4=0 X2+3X3-6X4=0 2X1-2X2-2X3+5X4=0