用矩阵的初等变换解下列线性方程组 x1+x2+2x3+4x4=3 3x1+x2+6x3+2x4=3 -x1+2x2-2x
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相关问题
用初等变换解线性方程组6x1 +4x3+x4=3x1-x2+2x3+x4=14x1+x2+2x3 =1x1+ x2+x3
解线性方程组x1+x2+3x3+4x4=5 2x1+4x2+4x3+6x4=8 -x1-2x2-x3-2x4=-3
解线性方程组(1)2x1-x2+x3-2x4=7 (2)x1+2x2-3x3=-4 (3)-x1-x2+x3+4x4=4
解下列线性方程组,感激不尽x1-2x2+3x3-4x4=4x2-x3+x4=-3x1+3x2-3x4=1答案x1=-8,
用消元法解线性方程组 2x1+x2-2x3+3x4=1 3x1+2x2-x3+2x4=4 3x1+
解下列线性方程组.x1+x2-3x4-x5=0,x1-x2+2x3-x4=0,4x1-2x2+6x3+3x4-4x5=0
.解线性方程组|X1+X2+X3+X4=5 |X1+2X2-X3+4X4=-2 |2X1-3X2-X3-5X4=-2 |
求线性方程组的通解 2x1-3x2+5x3+7x4=1 4x1-6x2+2x3+3x4=2 2x
求线性方程组一般解2x1+x^2-x3+x4=13x1-2x^3+x3-3x4=4x1+4x^2-3x3+5x4=-2
线性方程组为:x1-x2-5x3+4x4=2 2x1-x2+3x3-x4=1 3x1-2x2-2x3+3x4=3 7x1