解:增广矩阵=1111132133414341-32-111-148431r2-2r1,r3-3r1,r4-r11111130-1112801-2-6-1-200-237328r1r2,r3r2,r4-2r410223110-1112800-1-51-120015-112r12r3,r2r3,r4r3100-85-130-10-43-400-1-51-12000000r2*(-1),r3*(-1)100-85-130104-340015-112000000方程组的通解为:(-13,4,12,0,0)^Tc1(8,-4,-5,1,0)^Tc2(-5,3,1,0,1)^T.
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