abderaouf daiffi

This page lists questions and answers that were posted by visitors named abderaouf daiffi.

Questions

The following questions were asked by visitors named abderaouf daiffi.

Answers

The following answers were posted by visitors named abderaouf daiffi.

hello there, this what I've get Df = { (x,y) / x+y =/= 4 } Range of f is: (0,+infity)

ops is not correct