设[tex=0.929x1.0]r5Haq7W1lVGBc4dFEM2Zk1042rAqwO2NsSIOA9UOXzQ=[/tex]是[tex=2.643x1.286]Pcp8G3f9iSqumpymQTeO6g==[/tex]矩阵，[tex=0.929x1.0]k4XxnokJDFH17b6cU904x5y0XoeEFbvPcEEIqbrGwnU=[/tex]是[tex=2.286x1.286]LSTHw8W9yMi88yrn1vdMYQ==[/tex]矩阵[tex=0.929x1.0]88UwAOJavAcM4l3qYgNQUQ==[/tex]是[tex=2.286x1.286]v2WDxZ26mMX7CSc84SYpyw==[/tex]矩阵，证明：[tex=3.714x1.0]DjIqBEovmshGAzvBAHWBXN/FsmWIncbWgoLHoy9wBkQ=[/tex]的充分必要条件是[tex=0.929x1.0]k4XxnokJDFH17b6cU904x5y0XoeEFbvPcEEIqbrGwnU=[/tex]的每一列都是齐次线性方程组[tex=3.786x1.0]DjIqBEovmshGAzvBAHWBXHZXH7AcwFHxQixHOJxXFUk=[/tex]的解。