增广矩阵经行变换化成 (字数限制)
1 0 3/7 13/7 13/7
0 1 -2/7 -4/7 -4/7
0 0 0 0 0
通解为:(13/7,-4/7,0,0)'+c1(3,-2,-7,0)'+c2(13,-4,0,-7)',c1,c2 为任意常数
x1+5x2-x3-x4=-1x1-2x2+x3+3x4=33x1+8x2-x3+x4=1
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相关问题
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求解齐次线性方程组X1+2X2-4X4=-3X1-X2-4X3+9X4=222X1-3X2+X3+5X4=-33X1-2
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x1+5x2+2x3-4x4=3 -3x1-2x2+3x3+4x4=-6 -x1+3x2-x3-4x4=-2 -2x1+
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求方程组X1-3X2-2X3-X4=1 3X1-8X2-4X3-X4=0 -2X1+X2-4X3+2X4=1 -X1-2
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求线性方程组x1-3x2-2x3-x4=1,3x1-8x2-4x3-x4,-2x1+x2-4x3+2x4=1,-x1-2
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1x2=1/3(1x2x3=0x1x2 ) 2x3=1/3(2x3x4-1x2x3) 3x4=1/3(3x4x5- 2x
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1x2=1|3(1x2x3-0x1x2) 2x3=1|3(2x3x4-1x2x3) 3x4=1|3(3x4x5-2x3x
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解方程（1）x-2x=1-2/3x （2）x-3x-1.2=4.8-5x （3）-x=1-2x （4）2x-x+3=1.
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3（x+2）/x-3+ x+3/x-2=4 1/x+1 + 2x/x+1=2 5x/x+2 + 3/x^2+4x+4=5
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解线性方程组x1+x2+3x3+4x4=5 2x1+4x2+4x3+6x4=8 -x1-2x2-x3-2x4=-3
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线性方程组为：x1-x2-5x3+4x4=2 2x1-x2+3x3-x4=1 3x1-2x2-2x3+3x4=3 7x1