- #1

DanceLink

- 5

- 0

## Homework Statement

Find two different 2×2 matrices (other than ±I) such that A.AT = I.

Definition:

**I**is referring to i^2=-1 axion

**AT**=Transpose of A

## Homework Equations

## The Attempt at a Solution

Trying to make matrices on paper so that A times the transpose of A gives me -1 in all rows and columns.