Jawabanmu

2014-05-29T13:54:15+07:00
Y = 2x³ + 3x² -12x + 7
6x² + 6x - 12 = 0
x² + x - 2 = 0
(x-1)(x+2) = 0
x = 1 maka y = 2(1)³ + 3(1)²-12(1) + 7 = 2 + 3 -12+ 7 = 0
x=-2 maka y = 2(-2)³ + 3(-2)² - 12(-2) + 7 = -16+12+24+7 = 27
jadi, titik balik maksimum (1,0) dan minimum (-2,27)