Matrices_JEE MAIN_11-01-2019_S1 - Competishun – Live JEE & NEET Courses and Exam Prep

JEE MAIN 2019

11-01-2019 S1

Question

Let $A=\left(\begin{array}{ccc}0 & 2 q & r \\ p & q & -r \\ p & -q & r\end{array}\right)$. If $A A^{\top}=\mid 3$, then $|p|$ is :

Select the correct option:

$\frac{1}{\sqrt{3}}$

$\frac{1}{\sqrt{6}}$

$\frac{1}{\sqrt{5}}$

$\frac{1}{\sqrt{2}}$

✓ Correct! Well done.

✗ Incorrect. Try again or view the solution.

Solution

Question Tags

JEE Main

Mathematics

Medium

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