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AvioaneA10
a fost răspuns

Det. coordonatele vf. parabolei :
a) f(x)= 2x²-5x

Răspuns :

GreenEyes71
Salut,

[tex]x_{v\hat{a}rf}=-\dfrac{b}{2a}=-\dfrac{-5}{2\cdot 2}=\dfrac{5}{4};\\\\\\y_{v\hat{a}rf}=-\dfrac{\Delta}{4a}=-\dfrac{b^2-4ac}{4\cdot a}=-\dfrac{(-5)^2-4\cdot 2\cdot 0}{4\cdot 2}=-\dfrac{25}{8}.[/tex]

Green eyes.

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