- #1
liluiass
- 3
- 0
Homework Statement
X and Y 2 real numbers / |x| <1 and |y|<1
Prove that |x+y|<|xy+1|
Homework Equations
The Attempt at a Solution
|x+y|<2
I couldn't prove that |xy+1| >2
And couldn't find a way to solve the problem
Please help