Bonjour,
4x = 0
x = 0
2x + 7 = 0
x = -7/2
x -∞ -7/2 0 +∞
4x - - - 0 +
2x + 7 - 0 + 0 +
produit + 0 - 0 +
x ∈ [-7/2 ; 0]
-x = 0
4x + 1 = 0
x = -1/4
x + 6 = 0
x = -6
x -∞ -6 -1/4 0 +∞
-x + + + + + 0 -
4x + 1 - - - 0 + + +
x + 6 - 0 + + + + +
produit - 0 - 0 + 0 -
x ∈ ]-∞ ; -6[ ∪ ]-6 ; -1/4[ ∪ ]0 ; +∞[
Copyright © 2024 ELIBRARY.TIPS - All rights reserved.
Lista de comentários
Bonjour,
4x = 0
x = 0
2x + 7 = 0
x = -7/2
x -∞ -7/2 0 +∞
4x - - - 0 +
2x + 7 - 0 + 0 +
produit + 0 - 0 +
x ∈ [-7/2 ; 0]
-x = 0
x = 0
4x + 1 = 0
x = -1/4
x + 6 = 0
x = -6
x -∞ -6 -1/4 0 +∞
-x + + + + + 0 -
4x + 1 - - - 0 + + +
x + 6 - 0 + + + + +
produit - 0 - 0 + 0 -
x ∈ ]-∞ ; -6[ ∪ ]-6 ; -1/4[ ∪ ]0 ; +∞[