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a=2 b=3 c=1
p=-b/2a=-3/4 f(p)=2*(-3/4)²+3*(-3/4)+1=-1/8=q
lub tak;
Δ=b²-4ac=9-8=1 q=-Δ/4a=-1/8
W=(p;q)=(-3/4;-1/8)= współrzedne wierzchołka
postac kanoniczna;
y=a(x-p)²+q
y=2(x+3/4)²-1/8