Jawabanmu

2014-03-09T20:58:31+07:00
F(x) = x² - 2x + 4
a = 1
b = -2
c = 4
titik balik maximum atau minimum berarti x = -b/2a
x = 2/2
x = 1
karena x = 1 maka y = f(1) = 1² - 2(1) + 4
y = 1 - 2 + 4
y = 3
jadi koordinat ttk balik minimum (1 , 3)