super.muppy
Member
- Joined
- Aug 29, 2008
- Messages
- 375
- Gender
- Male
- HSC
- 2010
can someone post up the school ranks 
and
prove |a+b| smaller or equal to |a|+|b| for all real a,b

Ty
and
prove |a+b| smaller or equal to |a|+|b| for all real a,b
Ty