If A= 1 3 B= -1 4 then 2A+B = - Vidyadip

MCQ

If $\text{A}=\displaystyle \begin{vmatrix} 1 \\ 3 \end{vmatrix}\text{B}=\displaystyle \begin{vmatrix} -1 \\ 4 \end{vmatrix}$ then $ 2\text{A}+\text{B} =$

A
$\displaystyle \begin{vmatrix} 10 \\ 9 \end{vmatrix}$
B
$\displaystyle \begin{vmatrix} 10 \\ 1 \end{vmatrix}$
✓
$\displaystyle \begin{vmatrix} 1 \\ 10 \end{vmatrix}$
D
$\displaystyle \begin{vmatrix} 1 \\ 9 \end{vmatrix}$

✓

Answer

Correct option: C.

$\displaystyle \begin{vmatrix} 1 \\ 10 \end{vmatrix}$

$2\text{A+B}=|26|$

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