If A= 2 &-3 3 & 2 and B= 3 &-2 2 & 3 then 2 A-B= - Vidyadip

MCQ

If $\text{A}=\displaystyle \begin{vmatrix} 2 &\text{amp;}-3 \\ 3 &\text{amp; 2} \end{vmatrix}$ and $\text{B}=\displaystyle \begin{vmatrix} 3 &\text{amp;}-2 \\ 2 &\text{amp; 3} \end{vmatrix}$ then $2\text{ A-B}=$

A
$\displaystyle \begin{vmatrix} 1 &4 \\ 4 &1\end{vmatrix}$
B
$\displaystyle \begin{vmatrix} 1 &4 \\ 1 &4\end{vmatrix}$
✓
$\displaystyle \begin{vmatrix} 1 &-4 \\ 4 &1\end{vmatrix}$
D
$\displaystyle \begin{vmatrix} 4 &1\\ 1 &4\end{vmatrix}$

✓

Answer

Correct option: C.

$\displaystyle \begin{vmatrix} 1 &-4 \\ 4 &1\end{vmatrix}$

$2\text{ A-B}=\displaystyle \begin{vmatrix} 4 &\text{amp;}-6 \\ 6 &\text{amp; 4} \end{vmatrix}-\displaystyle \begin{vmatrix} 3 &\text{amp;}-2 \\ 2 &\text{amp; 3} \end{vmatrix}=\displaystyle \begin{vmatrix} 1 &\text{amp;}-4\\ 4 &\text{amp; 1} \end{vmatrix}$

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "M.C.Q (1 Marks)" from MATRICES→MATRICES — all question types→Maths STD 12 Science question papers→Gujarat Board STD 12 Science question papers→Gujarat Board question paper generator→

Similar questions

If $\hat{\text{i}},\hat{\text{j}},\hat{\text{k}}$ are unit vectors, then

How much is the area of rectangular field:

If $\alpha = {\cos ^{ - 1}}\,\left( {\frac{3}{5}} \right),\beta = {\tan ^{ - 1}}\,\left( {\frac{1}{3}} \right)$, where $0 < \alpha ,\beta < \frac{\pi }{2}$, then $\alpha - \beta $ is equal to

Which of the following function $(s)$ is/are Transcidental?

$xy$ - plane divides the line joining the points $(2, 4, 5)$ and $(-4, 3, -2)$ in the ratio

The area (in sq. units) of the region

$\left\{(\mathrm{x}, \mathrm{y}) \in \mathrm{R}^{2} | 4 \mathrm{x}^{2} \leq \mathrm{y} \leq 8 \mathrm{x}+12\right)$ is

If $f(x) = {(\left| x \right|)^{\left| {\sin x} \right|}},{\kern 1pt} $ , then $f'\left( { - \frac{\pi }{4}} \right) = $

The relation 'R' in N × N such that (a, b)R(c, d) ⇔ a + d = b + c is:

The value of definite integral $\int\limits_\infty ^0 {\frac{{z\,{e^{ - z}}}}{{\sqrt {1 - {e^{ - 2z}}} }}\,dz} $.

Choose the correct answer from the given four options: The slope of tangent to the curve $x=t^2+3 t-8, y=2 t^2-2 t-5$ at the point $(2,-1)$ is: