Question

Ná parabola y=2x2-(m-3) x+1, o vértice te m abscissa 1. A ordenada do vértice é??

Answer 1

Boa tarde

y = 2x² - (m - 3)x + 1

a = 2

b = -(m - 3)

c = 1

vértice

Vx = -b/2a = 1

(m - 3)/4 = 1

m - 3 = 4

m = 7

y = 2x² - 4x + 1

delta

d² = 16 - 8 = 8

Vy = -d²/4a

Vy = -8/8 = -1