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Determinati coordonatele varfului parabolei asociate functiei.
f:R-R,f(x)=xpatrat-4x+2


Răspuns :


[tex]x_{v\hat{a}rf}=-\dfrac{b}{2a}=-\dfrac{-4}{2\cdot 1}=2;\\\\y_{v\hat{a}rf}=-\dfrac{\Delta}{4a}=-\dfrac{b^2-4ac}{4a}=-\dfrac{(-4)^2-4\cdot 1\cdot2}{4\cdot 1}=-\dfrac{8}{4}=-2.[/tex]

Green eyes.