Question

Dada a função f(x) = 2x² + 8X + 1, Calcule as coordenadas do vértice ( Xv, Yv). *

1 ponto

A) (-1, -2)

B) (1, 2)

C) (-2, 1)

D) ( -2, -1)

E) ( -1, 2)​

Answer 1

Explicação passo-a-passo:

=> xV

xV = -b/2a

xV = -8/2.2

xV = -8/4

xV = -2

=> yV

yV = -Δ/4a

Δ = 8² - 4.2.1

Δ = 64 - 8

Δ = 56

yV = -Δ/4a

yV = -56/4.2

yV = -56/8

yV = -7

Resposta: (-2, -7)