" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
x ≠ 0
x ≠ -3
3/x +1 > 0
(3 + x)/x > 0
{3 + x >0 {x >-3
{x > 0 {x > 0 x ∈ (0;+∞)
{3 + x <0 {x < -3 x ∈ (-∞;-3)
{x < 0 {x < 0
x ∈ (-∞;-3)∪(0;+∞)