Of the Products AB, BA, A² and B², Which Ones $A = \left[ \begin{array} { c } - 3 \\1 \\- 7\end{array} \right] , B = \left[ \begin{array} { l l l } 7 & 1 & 6\end{array} \right]$

question 34

Multiple Choice

Of the products AB, BA, A² and B², which ones are possible for the given matrices? $A = \left[ \begin{array} { c } - 3 \\1 \\- 7\end{array} \right] , B = \left[ \begin{array} { l l l } 7 & 1 & 6\end{array} \right]$

• A)B² only
• B)A² only
• C)BA only
• D)AB only
• E)AB and BA only

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