线性代数,x1+x2-3x3-x4=0 3x1-x2-3x3+4x4=0 x1+5x2-9x3-8x4=0

线性代数,x1+x2-3x3-x4=0 3x1-x2-3x3+4x4=0 x1+5x2-9x3-8x4=0 用线性代数解x1+3x2+5x3+7x4 =12,3x1+5x2+7x3+x4=0,5x1+7x2+x3+3x4=1,7x1+x2+3x3+5x4=16 求解线性代数----求齐次线性方程组的通解x1+x3-5x4=02x1+x2-3x4=0x1+x2-x3+2x4=0 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 线性代数 求通解X1+2X2-X3-X4=0X1+2X2 +X4=4-X1-2X2+2X3+4X4=0求通解 用高斯消元法解下列线性代数方程组X1+2X2-X3-2X4=22X1-X2+X3-2X4=3X1-2X2+X4=-5 线性代数练习题求助求方程组：①X1-X2-X3+X4=0;②X1-X2+X3-3X4=0;③X1-X2-2X3+3X4=0的通解.麻烦写下解题过程，谢谢~ 线性代数:求下列齐次线性方程组的基础解系:X1-2X2+4X3-7X4=0 2X1+X2-2X3+X4=0 3X1-X2+2X3-4X4=0 求解方程组 { x1-x2-x3+x4=0 {x1-x2+x3-3x4=1 {x1-x2-2x3+3x4=-1/2 的通解 PS: { 是线性代数中的符号 { x1-x2-x3+x4=0 {x1-x2+x3+3x4=1 {x1-x2-2x3+3x4=-1/2 的通解 PS: { 是线性代数中的符号 求方程组通解,线性代数问题X1+X2-3X3-X4=13X1-X2-3X3+4X4=1X1+5X2-9X3-8X4=0X后面的全是下标, 线性代数V=(x1 x2 x3 x4)x1-x2+x3-4x4=0 W是其子空间,求W得基底如何得出矩阵呢,然后初等变换,不好意思是X1-X2+X3-3X4~ 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 | 线性代数题9求解线性方程组(用奇次方程基础解系表示)x1-x2+x3-2x4=5x1-2x2-x3+3x4=4{2x1-3x2+x4=93x1-4x2+x3-x4=14 线性代数中求基础解系时自由未知变量是不是任取比如现在通过计算将方程组变为x1=(2*x3)+(3*x4) x2=(5*x3)+(4*x4)我看书上将x1,x2选为主元,选x3,x4为自由未知量,然后令x3,x4=1,0与x3,x4=0,1,代入x1=(2*x3)+(3 求齐次线性方程组 X1+X2-X3-X4=0 2X1-5X2+3X3+2X4=0 7X1-7X2+3X3+X4=0 解方程组(x1+2x2+2x3+x4=0,2x1+x2-2x3-2x4=0,x1-x2-4x3-3x4=0) 解非线性方程组 x1+2x2+2x3+x4=0 2x1+x2-2x3-2x4=0 x1-x2-4x3-3x4=0