1.

If \({\rm{A}} = \left[ {\begin{array}{*{20}{c}} 1&0&{ - 2}\\ 2&{ - 3}&4 \end{array}} \right]\), then the matrix X for which 2X + 3A = 0 holds true is

A. \(\left[ {\begin{array}{*{20}{c}} { - \frac{3}{2}}&0&{ - 3}\\ { - 3}&{ - \frac{9}{2}}&{ - 6} \end{array}} \right]\)
B. \(\left[ {\begin{array}{*{20}{c}} {\frac{3}{2}}&0&{ - 3}\\ 3&{ - \frac{9}{2}}&{ - 6} \end{array}} \right]\)
C. \(\left[ {\begin{array}{*{20}{c}} {\frac{3}{2}}&0&3\\ 3&{\frac{9}{2}}&6 \end{array}} \right]\)
D. \(\left[ {\begin{array}{*{20}{c}} { - \frac{3}{2}}&0&3\\ { - 3}&{\frac{9}{2}}&{ - 6} \end{array}} \right]\)
Answer» E.


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