" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
untuk mencari titik stasioner, maka f'(x) = 0
f'(x) = 0
3x² + 12x + 9 = 0
x² + 4x + 3 = 0
(x + 1) (x + 3) = 0
x = -1
x = -3
untuk x = -1 :
f(-1) = (-1)³ + 6(-1)² + 9(-1) + 7
f(-1) = -1 + 6 - 9 + 7
f(-1) = 3
Untuk x = -3 :
f(-3) = (-3)³ + 6(-3)² + 9(-3) + 7
f(-3) = -27 + 54 - 27 + 7
f(-3) = 7
Jadi, titik stasionernya adalah (-1, 3) dan (-3, 7)