- #1

athena810

- 22

- 0

## Homework Statement

Prove:

|xy| = |x| * |y|?

## Homework Equations

|x| = sqrt(x^2)

## The Attempt at a Solution

(|xy|)^2 = (|x| * |y|)^2

x^2y^2 = x^2 y^2

---I think this is incorrect though. Really, I don't understand proofs and the concept of proofing.