1.

If \(A = \left[ {\begin{array}{*{20}{c}}1&5\\6&2\end{array}} \right]\) and \(B = \left[ {\begin{array}{*{20}{c}}3&7\\8&4\end{array}} \right].A{B^T}\) is equal to

A. \(\left[ {\begin{array}{*{20}{c}}{38}&{28}\\{32}&{56}\end{array}} \right]\)
B. \(\left[ {\begin{array}{*{20}{c}}3&{40}\\{42}&8\end{array}} \right]\)
C. \(\left[ {\begin{array}{*{20}{c}}{43}&{27}\\{34}&{50}\end{array}} \right]\)
D. \(\left[ {\begin{array}{*{20}{c}}{38}&{32}\\{28}&{56}\end{array}} \right]\)
Answer» B. \(\left[ {\begin{array}{*{20}{c}}3&{40}\\{42}&8\end{array}} \right]\)


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