数学线性方程组 急求!!!!!
{2X1-X2+3X3=33X1+X2-5X3=04X1-X2+X3=3X1+3X2-13X3=-6{X1-2X2+3X3-4X4=4X2-X3+X4=-3X1+3X2-...
{2X1-X2+3X3=3
3X1+X2-5X3=0
4X1-X2+X3=3
X1+3X2-13X3=-6
{X1-2X2+3X3-4X4=4
X2-X3+X4=-3
X1+3X2-3X4=1
-7X2+3X3+X4=-3 展开
3X1+X2-5X3=0
4X1-X2+X3=3
X1+3X2-13X3=-6
{X1-2X2+3X3-4X4=4
X2-X3+X4=-3
X1+3X2-3X4=1
-7X2+3X3+X4=-3 展开
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