

FUNGSI KUADRAT
Presentation
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Mathematics
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KG
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Hard
Rosbiaty Syam
Used 1+ times
FREE Resource
6 Slides • 0 Questions
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FUNGSI KUADRAT
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BENTUK UMUM FUNGSI KUADRAT
Bentuk umum fungsi kuadrat adalahf(x) = ax2 + bx + c ,y = ax2 + bx + c dengan a ≠ 0 dan a,b,c bilangan real
Grafik fungsi kuadrat berbentuk parabola
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LANGKAH-LANGKAH MENGGAMBAR GRAFIK FUNGSI KUADRAT
1. Menentukan titik potong fungsi kuadrata. titik potong sb x y = 0 maka a. x2 + bx + c = 0, b. titik potong sb y x = 0, maka y = c
2. Menentukan nilai ekstrem Nilai ekstrem dari fungsi kuadrat adalah y = f(x) =D = b2 – 4a.c , D = diskriminan
3. Menentukan titik ekstremtitik ekstrem dari fungsi kuadrat adalahP(x,y) dengan x =dan y =x = disebut sumbu simetri
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MENENTUKAN PERSAMAAN FUNGSI KUADRAT
Untuk menentukan persamaan kuadrat yang melalui titik ekstrem/titik puncak P(xp,,yp) dan sebuah titik A(x,y) menggunakan rumusy = a(x-xp)2 + yp
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Untuk menentukan persamaan fungsi kuadrat yang melalui titik potong dengan sumbu x yaitu A(x1,0) dan B(x2,0), serta melalui sembarang titik C ( x,y) maka rumusnya adalah…y = a(x – x1)(x – x2)
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TERIMA KASIH......
FUNGSI KUADRAT
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