Question

Encontre o vértice da parábola
f(x)= -x²+4x-3
Me ajudem pfvr

Answer 1

f(x)=-x²e+4x-3

a=-1, b=4 e c=-3

V=(Xv, Yv)

Xv=-b/2a

Yv= -(-b²-4ac)/4a

Xv=-4/2.-1=-4/-2=2

Yv= -(4²-4.-1.-3)/4.-1=-(16-12)/-4=-4/-4=1

(Xv, Yv)= (2, 1)