Contoh 10.1
Y
10 9 8 7 6 5 4 2 1
-1 -2 -4 -5 -6 -7 -8 -9
-10
1. y = x2 – x y = x2 – x titik puncak minimum.
2. x2 – 6x x2 – 6x titik puncak minimum.
y = -2x2 y = -2x2 maksimum.
X
-10 -9 -8 -7 -6 -5 -4 -2 -1
1 2 4 5 6 7 8 9 10
98 Kelas IX SMP/MTs Semester 2