If the matrix A=[[0,2],[k,−1]] satisfies... | Matrices | JEE Main

JEE MAIN 2021

27-08-2021 S1

Question

If the matrix $A=\left[\begin{array}{cc}0 & 2 \\ k & -1\end{array}\right]$ satisfies $A\left(A^3+3 I\right)=2 I$, then the value of $K$ is :

Select the correct option:

A

$\frac{1}{2}$

B

$-\frac{1}{2}$

C

-1

D

1

✓ Correct! Well done.

✗ Incorrect. Try again or view the solution.

Solution

Question Tags

JEE Main

Mathematics

Medium

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