Question

Determine as coordenadas do Vértice V da parábola que representa a função f(x)  = - 5x²+3x-1?

Answer 1

f(x)=-5x²+3x-1

Xv=-b/2a

Yv=-Δ/4a

achar o delta

Δ=b²-4ac
Δ=9-20
Δ=-11

Xv=$- \frac{b}{2a} = \frac{-3}{-10} = \frac{3}{10}$

Yv=$\frac{11}{4(-5)}= \frac{11}{-20} =- \frac{11}{20}$

V$( \frac{3}{10} ,- \frac{11}{20} )$