If A is a symmetric matrix | Matrices

JEE MAIN 2019

12-04-2019-S-1

Question

If A is a symmetric matrix and $B$ is a skew-symmetric matrix such that $A+B=\left[\begin{array}{cc}2 & 3 \\ 5 & -1\end{array}\right]$, then $A B$ is equal to :

Select the correct option:

$\left[\begin{array}{ll}4 & -2 \\ 1 & -4\end{array}\right]$

$\left[\begin{array}{cc}4 & -2 \\ -1 & -4\end{array}\right]$

$\left[\begin{array}{cc}-4 & -2 \\ -1 & 4\end{array}\right]$

$\left[\begin{array}{cc}-4 & 2 \\ 1 & 4\end{array}\right]$

✓ Correct! Well done.

✗ Incorrect. Try again or view the solution.

Solution

Question Tags

JEE Main

Mathematics

Medium

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