" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
x² - 9 = (x - 3)(x + 3)
x - 3 = 0
x = 3
x + 3 = 0
x = -3
Df ∈ R / {-3,3}
F(x) = x - 2/ x² - 4
x² - 4 = (x - 2)(x +2)
x - 2 = 0
x = 2
x + 2 = 0
x = -2
Df ∈ R / {-2,2}