- #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.