1.

If \(A = \left[ {\begin{array}{*{20}{c}} {4i - 6}&{10i}\\ {14i}&{6 + 4i} \end{array}} \right]\) and \(k = \frac{1}{{2i}}\), where \(i = \sqrt { - 1}\), then kA is equal to

A. \(\left[ {\begin{array}{*{20}{c}} {2 + 3i}&5\\ 7&{2 - 3i} \end{array}} \right]\)
B. \(\left[ {\begin{array}{*{20}{c}} {2 - 3i}&5\\ 7&{2 + 3i} \end{array}} \right]\)
C. \(\left[ {\begin{array}{*{20}{c}} {2 - 3i}&7\\ 5&{2 + 3i} \end{array}} \right]\)
D. \(\left[ {\begin{array}{*{20}{c}} {2 + 3i}&5\\ 7&{2 + 3i} \end{array}} \right]\)
Answer» B. \(\left[ {\begin{array}{*{20}{c}} {2 - 3i}&5\\ 7&{2 + 3i} \end{array}} \right]\)


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