Question

If M = [ 6 -4 ] , find (i) 3M (ii) 1/2M (iii) -2M

Answer 1

Step-by-step explanation:

Question :

If M = $\left[\begin{array}{ccc}6&-4\end{array}\right]$, find i) 3M ii) $\bold{\frac{1}{2} }$M iii) -2M

Solution :

i) 3M :-

$\rightarrow \left3[\begin{array}{ccc}6&-4\end{array}\right]$

$\rightarrow \left[\begin{array}{ccc}18&-12\end{array}\right]$

ii) $\bold{\frac{1}{2} }$M :-

$\rightarrow \left\frac{1}{2} [\begin{array}{ccc}6&-4\end{array}\right]$

$\rightarrow \left[\begin{array}{ccc}3&-2\end{array}\right]$

iii) -2M :-

$\rightarrow \left-2[\begin{array}{ccc}6&-4\end{array}\right]$

$\rightarrow \left[\begin{array}{ccc}-12&8\end{array}\right]$

Learn more :

If A = $\left[\begin{array}{ccc}2&-3&4\end{array}\right]$, find i) 5A ii) (-4)A iii) -A

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