你题目好像没有全部写下吧,没办法帮你.x1,x2,x3,x4,要求是线性无关的.
大一线性代数题x1=-2/3+1/3x4 x2=-3/5+1/5x4 x3=-2/7+1/7x4 (x4为自由未知数）书
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用线性代数解x1+3x2+5x3+7x4 =12,3x1+5x2+7x3+x4=0,5x1+7x2+x3+3x4=1,7
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(4.5-x)*7=17.5 x/2+4=3/2x+1 7/2*2/3-4x=7/3 5/8(x-.3)=75% 1+x
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线性代数题：解齐次方线性程组 x1+x2-3x4-x5=0 x1-x2+2x3-x4=0 4x1-2x2+6x3+3x4
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1题.x-5/6=1/9 2题.2/7+x=3/4 3题.x+1/4=4/5 4题.y -2/5=3/4 5题.3x-x
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线性代数,x1+x2-3x3-x4=0 3x1-x2-3x3+4x4=0 x1+5x2-9x3-8x4=0
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线性代数X1+X2+X3+X4=-14X1+3X2+5X3-X4=-1aX1+X2+3X3+bX4=1有3个线性无关的解
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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
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线性代数计算题当λ取何值时,线性方程组x1-x2+x4=2,x1-2x2+x3+4x4=3,2x1-3x2+x3+5x4
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解齐次线性方程组,x1+x2-x3-x4=0,2x1-5x2+3x3+2x4=0,7x1-7x2+3x3+x4=0,线性
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x1 + x2 + x3 + x4 + x5 = 7 4x1 + 2x2 + 3x3 + 2x4 - 2x5 = 5 x