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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. \(\left[ {\begin{array}{*{20}{c}} {2 - 3i}&5\\ 7&{2 + 3i} \end{array}} \right]\) | |