Multiply Matrices


- A) $\mathrm { AB }$ Is Not Defined

question 77

Multiple Choice

Multiply Matrices


- $A = \left[ \begin{array} { r r r } 3 & - 2 & 1 \\ 0 & 4 & - 2 \end{array} \right] , B = \left[ \begin{array} { r r } 5 & 0 \\ - 2 & 2 \end{array} \right]$

• A) \(\mathrm { AB }\) is not defined.
• B)\(\left[ \begin{array} { r r r } 15 & - 10 & 5 \\ - 6 & 12 & - 6 \end{array} \right]\)
• C)
• \[\left[ \begin{array} { r r }
• 15 & - 6 \\
• - 10 & 12 \\
• 5 & - 6
• \end{array} \right]\]
• D)
• \(\left[\begin{array}{rr}
• 15 & 0 \\
• 0 & 8
• \end{array}\right]\)

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