Fungsi kuadrat yang sesuai grafik di atas adalah A. f(x) = - 2x² + 3x + 3 B. f(x) = x² - 4x + 3 C. f(x) = x² + 4x + 3 D. f(x) = 2x² + 3x - 3Please jawab guys​

audreannelindulv – February 03, 2023

Fungsi kuadrat yang sesuai grafik di atas adalah

A. f(x) = - 2x² + 3x + 3
B. f(x) = x² - 4x + 3
C. f(x) = x² + 4x + 3
D. f(x) = 2x² + 3x - 3


Please jawab guys​

Jawaban:

[tex]diketahui \\ x1 = - 1 \\ x2 = - 3 \\ x = 0 \\ y = 3 \\ fungsi \: kuadrat \\ •f(x) = a(x - x1)(x - x2) \\ 3 = a(0 - ( - 1))(0 - ( - 3)) \\ 3 = a(0 + 1)(0 + 3) \\ 3 = a(1)(3) \\ 3 = 3a \\ \frac{3}{3} = a \\ 1 = a \\ •f(x) = a(x - x1)(x - x2) \\ = 1(x - ( - 1))(x - ( - 3)) \\ = (x + 1)(x + 3) \\ = {x}^{2} + 3x + 1x + 3 \\ = {x}^{2} + 4x + 3[/tex]

Jawaban c.x²+4x+3

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