关于x、y的二元线性方程组2x+my=5nx-3y=2,的增广矩阵经过变换,最后得到的矩阵为100131,则m+n=()A.-1B.23C.53D.-23-数学

题目简介

关于x、y的二元线性方程组2x+my=5nx-3y=2,的增广矩阵经过变换,最后得到的矩阵为100131,则m+n=()A.-1B.23C.53D.-23-数学

题目详情

关于x、y的二元线性方程组,的增广矩阵经过变换,最后得到的矩阵为http://www.mofangge.com/html/qDetail/02/g0/201401/data:image/png;base64,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,则 m+n=(  )
A.-1B.C.D.-
题型:单选题难度:中档来源:上海模拟

答案

B

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