narysuj wykres i wypisz własności : y=2x²
liczby x=-2,-2,-1/2,-1/3,0,1/3,1/2,1,2
y=2x2
x=-2
y=2*(-2)do kwadratu
y=8
x=-1/2
y=2*(-1/2)do kwadratu
y=2/4=1/2
x=-1/3
y=2*(-1/3)do kwadratu
y=2/9
x=0
y=0
x=1/3
y=2*(1/3)do kwadratu
x=1/2
y=2*(1/2)do kwadratu
x=1
y=2*1do kwadratu
y=2
x=2
y=2*2do kwadratu
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y=2x2
x=-2
y=2*(-2)do kwadratu
y=8
x=-1/2
y=2*(-1/2)do kwadratu
y=2/4=1/2
x=-1/3
y=2*(-1/3)do kwadratu
y=2/9
x=0
y=0
x=1/3
y=2*(1/3)do kwadratu
y=2/9
x=1/2
y=2*(1/2)do kwadratu
y=2/4=1/2
x=1
y=2*1do kwadratu
y=2
x=2
y=2*2do kwadratu
y=8