Question

Determine a vértice da parábola que representa a função definida por:a) y=2×+4×2 b)y=2×2+4×

Answer 1

a) y=2×+4×2
Calcule o valor de delta
Δ = b² – 4ac
Δ = 2² – 4(4)0
Δ = 4+0
Δ = 4

Vértices da parábola
Vx = -b/2a
Vx = -(2)/2.4
Vx = -1/4

Vy= Δ/4a
Vy= 4/4.4
Vy= 1/4

V(x,y) = ( -0,25 ; 0,25 )


b)y=2x²+4x

Calcule o valor de delta
Δ = b² – 4ac
Δ = 4² – 4(2)(0)
Δ = 16+0
Δ = 16

Vértices da parábola
Vx = -b/2a
Vx = -(4)/2.2
Vx = -1/1

Vy= Δ/4a
Vy= 16/4.2
Vy= 2

V(x,y) = ( -1 ; 2 )


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