
Fungsi Kuadrat
Presentation
•
Mathematics
•
10th Grade
•
Medium
Standards-aligned
Yuli Yulianti
Used 2+ times
FREE Resource
3 Slides • 5 Questions
1
Fungsi Kuadrat
Rabu, 10 Januari 2021
Yuli Yulianti, S.Pd
2
Definisi Fungsi Kuadrat
Fungsi kuadrat adalah suatu persamaan dari variabel yang mempunyai pangkat tertinggi dua.
Bentuk umum persamaan kuadrat adalah:
ax2 + bx + c = 0
Bentuk Khususnya ;
2x2 + 4x + 5 = 0
3
Langkah - Langkah Menggambar Fungsi Kuadrat
1). Tentukan titik potong dengan sumbu x (nilai y atau f(x) sama dengan 0).
2).Tentukan titik potong dengan sumbu y (nilai x = 0).
3).Menentukan sumbu simetri . (x = -b/2a)
4).Menentukan titik puncak (-b/2a, -b^2 - 4ac/4a) atau hitung nilai puncak y menggunakan substitusi/mengganti nilai x yang diperoleh pada perhitungan nomor 3 ke dalam persamaan f(x).
4
Multiple Choice
Koordinat titik puncak grafik fungsi y = 4x2 + 12x + 6 adalah ....
(1½ , 3)
(1½ , -3)
(-1½ , 3)
(-1½ , -3)
5
Multiple Choice
Fungsi f(x)=ax2+bx+c memiliki nilai optimum ....
y=−2ab2+4ac
y=−4ab2+4ac
y=−2ab2−4ac
y=−4ab2−4ac
6
Multiple Choice
Grafik dari Fungsi kuadrat x2 adalah...
7
Multiple Choice
Fungsi f(x)=ax2+bx+c berpotongan dengan sumbu-y di ....
(0,c)
(0,-c)
(c,0)
(-c,0)
8
Multiple Choice
Bentuk umum fungsi kuadrat adalah...
Fungsi Kuadrat
Rabu, 10 Januari 2021
Yuli Yulianti, S.Pd
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