Diketahui Fungsi f(x)= x.x+4x+3 Mempunyai titik balik maksimum?

Kelas 10 Matematika
Bab Fungsi Kuadrat

f(x) = x² + 4x + 3
a = 1; b = 4; c = 3

Sumbu simetri
= -b/2a
= -4/(2 . 1)
= -2

f(-2) = (-2)² + 4 . (-2) + 3
f(-2) = 4 - 8 + 3
f(-2) = -1

(-2, -1)