设四元齐次线性方程组I为2x1+3x2-x3=0,x1+2x2+x3-x4=0且已知另一四元齐次方程

已知x1,x2,x3,x4为实数,且x1+x2+x3+x4=6,x1^2+x2^2+x3^2+x4^2=12,求证:0=已知x1,x2,x3,x4为实数,且x1+x2+x3+x4=6,x1^2+x2^

求齐次线性方程组X1+X2-X3-X4=02X1-5X2+3X3+2X4=07X1-7X2+3X3+X4=0求齐次线性方程组X1+X2-X3-X4=02X1-5X2+3X3+2X4=07X1-7X2+

求线性方程组一般解,2X1+X2-2X3+3X4=03X1+2X2-X3+2X4=0X1+X2+X3-X4=0求线性方程组一般解,2X1+X2-2X3+3X4=03X1+2X2-X3+2X4=0X1+

求线性方程组X1-X2-X3+X4=OX1-X2+X3-3X4=0X1-X2-2X3+3X4=0最好有具体过程求线性方程组X1-X2-X3+X4=OX1-X2+X3-3X4=0X1-X2-2X3+3X

线性方程组求解,x1+2x2+x3-x4=13x1+6x2-x3-3x4=0线性方程组求解,x1+2x2+x3-x4=13x1+6x2-x3-3x4=0线性方程组求解,x1+2x2+x3-x4=13x

线性方程组X1+X2+X3+X4=0,2X1+X2+X3+2X4=0,3X1+2X2+4X3+4=1线性方程组X1+X2+X3+X4=0,2X1+X2+X3+2X4=0,3X1+2X2+4X3+4=1

用初等行变换来解下列线性方程组（1）2x1-x2+3x3=33x1+x2-5x3=04x1-x2+x3=3x1+3x2-13x3=-6(2)x1-2x2+x3+x4=1x1-2x2+x3-x4=-1x

求齐次线性方程组x1+x2+2x3-x4=0-x1-3x3+2x4=02x1+x2+5x3-3x4=0的一般解.求齐次线性方程组x1+x2+2x3-x4=0-x1-3x3+2x4=02x1+x2+5x

求齐次线性方程组x1+x2+2x3-x4=0,-x1-3x3+2x4=0,2x1+x2+5x3-3x4=0的一般解求齐次线性方程组x1+x2+2x3-x4=0,-x1-3x3+2x4=0,2x1+x2

齐次线性方程组{X1+X2+3X3+X4=0;2X1-X2+X3-3X4=0;X1+X3-X4=0}的基础解系齐次线性方程组{X1+X2+3X3+X4=0;2X1-X2+X3-3X4=0;X1+X3-

求解齐次线性方程组2x1+3x2-x3-7x4=03x1+x2+2x3-7x4=04x1+求解齐次线性方程组2x1+3x2-x3-7x4=03x1+x2+2x3-7x4=04x1+x2-3x3+6x4

求齐次线性方程组x1-x2+5x3-x4=0;x1+x2-2x3+3x4=0;3x1-x2+8x3+x4=0;x1+3x2-9x3+7x4=0.基础解系和通解?得到等价方程组为：x1=-3/2*x3-

求齐次线性方程组X1+X2+2X2-X4=0,-X1-3X3+2X4=0,2X1+X2+5X3-3X4=0的一般解.求齐次线性方程组X1+X2+2X2-X4=0,-X1-3X3+2X4=0,2X1+X

判断齐次线性方程组的解x1+x2+2x3+3x4=0x1+2x2+3x3-x4=02x1-x2-x3-2x4=02x1+3x2-x3-x4=0判断齐次线性方程组的解x1+x2+2x3+3x4=0x1+

判断下列齐次线性方程组是否有非零解x1+3x2-9x3+7x4=0-3x1-x2+8x3+x4=0x1-3x2+5x3-x4=0x1+x2-2x3+3x4=0判断下列齐次线性方程组是否有非零解x1+3

.解线性方程组｜X1+X2+X3+X4=5｜X1+2X2-X3+4X4=-2｜2X1-3X2-X3-5X4=-2｜3X1+X2+2X3+11X4=0.解线性方程组｜X1+X2+X3+X4=5｜X1+2

求线性方程组{X1-3x2-2x3-X4=1;3X1-8X2-4X3-X4=0;-2X1+X2-4X3+2X4=1;-X1-2X2-6X3+X4=2的一般解.求线性方程组{X1-3x2-2x3-X4=

X1-X2-3X3+X4=1X1-X2+2X3-X4=32X1-2X2-11X3+4X4=04X1-4X2+3X3-2X4=10用消元法解线性方程组X1-X2-3X3+X4=1X1-X2+2X3-X4

判断齐次线性方程组解的情况；若有非零解,求其通解.X1+X2-X3+2X4=02X1-2X2+2X3-3X4=05X1+X2-X3+X4=03X1-X2+3X3-X4=0判断齐次线性方程组解的情况；若

解线性方程组{2x1-5x2+2x3-3x4=0,x1+2x2-x3+3x4=0,-2x1+14x2-6x3+12x4=0}一般解解线性方程组{2x1-5x2+2x3-3x4=0,x1+2x2-x3+