an exercise of linear programming written by katta g murty

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"let $D$ be a matrix that contains a row vector all the entries in which are zero, and let $E$ be the matrix obtained by deleting that zero row vector from $D$. prove that the set of column vectors of $D$ is linearly independent iff the set of column vectors of $E$ is linearly independent ." source: excercise $3.8$ of the book called "linear programming murty" I tried but could not to solve it. I also searched by can't find manual solution file for the book that I mentioned.