Tentukan titik puncak dari F(X)=3X²-5X+15

turunan = 0
6x - 5 = 0
6x = 5
x = 5/6
y = 3(5/6)² - 5(5/6) + 15
= 25/12 - 25/6 + 15
= 25/12 - 50/12 + 180/12
= 155/12
titik puncak (5/6 , 155/12)