- #1
gajohnson
- 73
- 0
Homework Statement
The problem statement and proof can be found here. The proof continues after this, but I only have a question about the beginning of the proof.
Homework Equations
NA
The Attempt at a Solution
My question is simply this:
Every proof I find for this problem starts assuming the inequality [itex]0≤(x-y^2)^2[/itex] and I cannot figure out why. I'm sure this is a simple matter, but any explanation would be appreciated.
Thanks!