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Verified answer
JawabPuncak (p,q) = (3, -5) → y = a(x - p)² + q
y = a(x -3)² - 5
melalui (0,4) , x = 0, y = 4
4= a(0-3)² - 5
4 = 9a - 5
9a = 9
a = 1
y = 1 (x - 3)² - 5
y = x² - 6x + 9 - 5
y = x² - 6x + 4
Verified answer
Jawabannya:Pelajaran : Matematika
Materi. ; Fungsi Kuadrat
Kelas. : XI
Pembahasan:
Dik:
(xp,yp)= (3,-5) → (x,y)= (0,4)
Dit:
Persamaan ?
Jwb;
y= a(x-xp)².yp
y= a(0-3)².(-5)
4=a(0-3)².(-5)
4=a(-3)².(-5)
4= a.(-9).(-5)
4= a. -4
a= -4/4
a= -1
sehingga
y=a(x-3)².(-5)
y=-1(x-3)².(-5)
y=-1(x²-6x.(9-5)
y= x²-6x+4
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