Odpowiedzi

2009-04-03T14:24:46+02:00
(x – 3)(x² – x – 2) ≤ 0
x=3

x²-x-2
Δ=1+8=9=3²
x'=(-b-√Δ)/2a=-1
x''=(-b+√Δ)/2a=2

rysunek:
http://img7.imageshack.us/img7/8453/74440940.png

x∈(-oo.-1>u<2,3>