Question

05) Determinando as coordenadas do vértice da função f(x) = – 3x2 + 5x – 2, encontro:

( ) V = (5/6, – 1/12)

( ) V = (5/6, 1/12)

( ) V = (1/6, – 5/12)

( ) V = (– 1/5, – 6/12)

( ) V = (1/5, 5/12)

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Answer 1

Explicação passo-a-passo:

Xv = -b/2a = -5/2.(-3) = -5/-6 = 5/6

Delta = 5² - 4.(-3).(-2) = 25 - 24 = 1

Yv = - Delta/4.a = -1/4.(-3) = -1/-12 = 1/12

V = (5/6, 1/12)