Răspuns :

Răspuns:

V(-b/2a;-delta/4a)

-b/2a=-2/-2=1

-delta/4a=-(b^2-4ac)/4a=-(4-4*(-1)*2)/-4=-(4+8)/-4=-12/-4=3

V(1;3) apartine cadranului 1

McKiobillzid

Răspuns:

    [tex]\text{cadranul I}[/tex]

Explicație pas cu pas:

    f:ℝ→ℝ, f(x)=-x²+2x+2

    [tex]\text{V(}x_V,~y_V\text{)},~\text{V - varful parabolei}[/tex]

    [tex]x_V=\dfrac{-b}{2a}\\\\x_V=\dfrac{-2}{-2}=1[/tex]

    [tex]y_V=\dfrac{-\Delta}{4a}\\\\\Delta=b^2-4ac\\\\\Delta=12\\\\y_V=\dfrac{-12}{-4}\\\\y_V=3[/tex]

    [tex]\text{V(1,3)}\implies \text{varful se afla in cadranul I}[/tex]

Vezi imaginea McKiobillz

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