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ma wierzcholek w punkcie w(3/8,-1¾)podaj wzór tej funkcji
f(x) = (a+1)x²-ax-1
-b/2a=3/8
a/2(a+1)=3/8
6(a+1)=8a
6a+6=8a
6=2a
a=3
f(x) = 4x²-3x-1