" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
Verified answer
Jwabfungsi kuadrat
melalui titik potong (x1, 0) dan (x2, 0) --> y = a(x - x1)(x -2)
(1,0) dan (3,0) --> y = a(x -1)(x - 3)
melalui (-1 -16) --> -16 = a(-1-1)(-1-3)
-16 = a(-2)(-4)
-16 = 8a
a= -2
y = a (x -1)( x- 3)
y = - 2(x - 1)(x - 3)
y = - 2 (x² - 4x + 3)
y = - 2x² +8x - 6
Verified answer
Bentuk fungsi kuadratnyay = a ( x - x1 )( x - x2 )
(1,0) → (x1 , 0)
(3, 0) → (x2, 0)
substitusi
-16 = a ( -1 - 1 ) ( -1 - 3 )
didapat a = -2
tulis ulang persamaan tanpa mengganti nilai x,y
y = -2 ( x - 1 )( x - 3 )
y = -2 x² + 8x - 6
semoga jelas dan bermanfaat