Odpowiedzi

Najlepsza Odpowiedź!
2010-01-22T21:14:31+01:00
A ) f (x) > 0
x ∈ ( - ∞, -2) v (4, +∞)
f (x) < 0
x ∈ (-2, 4)
f (x)≥ 0
x ∈ (-∞, -2> v < 4, +∞)
f (x) ≤ 0
x ∈ <-2, 4>

b) f (x) > 0
x ∈ (-3, 2)
f (x) < 0
x ∈ (-∞, -3) v(2 , ∞ )
f (x)≥ 0
x∈ <-3, 2>
f (x) ≤ 0
x∈ (-∞, -3> v <2, ∞)

c) f (x) > 0
x ∈ R \ {3}
f (x) < 0
x ∈ Ф(zbiór pusty)
f (x)≥ 0
x ∈ R
f (x) ≤ 0
x = {3}

d) f (x) > 0
x ∈ Ф
f (x) < 0
x ∈ R \ {-4}
f (x)≥ 0
x = {-4}
f (x) ≤ 0
x ∈ R


e) f (x) > 0
x ∈ R
f (x) < 0
x ∈ Ф
f (x)≥ 0
x ∈ R
f (x) ≤ 0
x ∈ Ф

f) f (x) > 0
x ∈ Ф

f (x) < 0
x ∈ R
f (x)≥ 0
x ∈ Ф
f (x) ≤ 0
x ∈ R