- #1
Rederick
- 12
- 0
I expanded (x+y),(x+y) and got x^2+y^2 > 2xy then replaced 2xy with 2|x,y| but now I'm stuck.
I need to get it to ||x+y|| <= ||x|| + ||y||. Am I close?
I need to get it to ||x+y|| <= ||x|| + ||y||. Am I close?