3 and 4 .Determinants and Matrices
easy

જો $A = \left[ {\begin{array}{*{20}{c}}1&2&3\\5&0&7\\6&2&5\end{array}} \right]$ અને $B = \left[ {\begin{array}{*{20}{c}}1&3&5\\0&0&2\end{array}} \right]$, તો કયું વિધાન વ્યાખ્યાયિત થાય શકે ?

A

$AB$

B

$A + B$

C

$A'B'$

D

$B'A'$

Solution

(c) By inspection, $A'$is a matrix of order $3 \times 3$ and $B'$is a matrix of order $3 \times 2$. Therefore multiplication of these matrices is defined.

Standard 12
Mathematics

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