解方程组X1-2x2+3x3-x4=1,3x1-x2+5x3-3x4=2,2x1+x2+2x3-2x4=3
问题描述:
解方程组X1-2x2+3x3-x4=1,3x1-x2+5x3-3x4=2,2x1+x2+2x3-2x4=3
答
题目出错了
(1) X1-2x2+3x3-x4=1,
(2) 3x1-x2+5x3-3x4=2,
(3) 2x1+x2+2x3-2x4=3
(1)+(3)=3x1-x2+5x3-3x4=4
与(2) 3x1-x2+5x3-3x4=2相冲突 因此题目是错误的