Question

If A2 = I, where I is the identity matrix, which matrix correctly represents matrix A?

Answer 1

C. [3, -2]

[4, -3]

Explanation:

PLATOOOO

Answer 2

We know that
`\boldsymbol{A^2}=\boldsymbol{A* A}`

We also know that
`image`

Now, it has been given to us that
`\boldsymbol{A^2}=\boldsymbol{I}`

Therefore, we will have to find the correct
`\boldsymbol{A}` from the given options and we find that when:

`image`

then
`image`

Therefore, from the above given options, Option C is the correct option.

Therefore,
`image` is the correct answer.