If A = [ * 20 c 1&3&0 - 1 &2&1 0&0&2 ],B = [ * 20 c 2&3&4 1&2&3 -… - Vidyadip

MCQ

If $A = \left[ {\begin{array}{*{20}{c}}1&3&0\\{ - 1}&2&1\\0&0&2\end{array}} \right],B = \left[ {\begin{array}{*{20}{c}}2&3&4\\1&2&3\\{ - 1}&1&2\end{array}} \right]$, then $AB =$

A
$\left[ {\begin{array}{*{20}{c}}5&9&{13}\\{ - 1}&2&4\\{ - 1}&2&4\end{array}} \right]$
✓
$\left[ {\begin{array}{*{20}{c}}5&9&{13}\\{ - 1}&2&4\\{ - 2}&2&4\end{array}} \right]$
C
$\left[ {\begin{array}{*{20}{c}}1&2&4\\{ - 1}&2&4\\{ - 2}&2&4\end{array}} \right]$
D
None of these

✓

Answer

Correct option: B.

$\left[ {\begin{array}{*{20}{c}}5&9&{13}\\{ - 1}&2&4\\{ - 2}&2&4\end{array}} \right]$

b
(b) $AB = \left[ {\begin{array}{*{20}{c}}{\,\,5}&9&{13}\\{ - 1}&2&4\\{\,\, - 2}&2&4\end{array}} \right]$.

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