If $A=\begin{bmatrix}1 & 2\\4& 2\end{bmatrix},$ then the value of K for hich $|2A|=K|A|$ is :
Answer & explanation
Correct answer: option 3
The correct answer is option (3) → 4
$|2A|=K|A|$
as order of $A=2$
so $|2A|=2^2|A|$
so $k=2^2=4$
If $A=\begin{bmatrix}1 & 2\\4& 2\end{bmatrix},$ then the value of K for hich $|2A|=K|A|$ is :
Correct answer: option 3
The correct answer is option (3) → 4
$|2A|=K|A|$
as order of $A=2$
so $|2A|=2^2|A|$
so $k=2^2=4$