8 1/3
Penjelasan dengan langkah-langkah:
f(x) = 1/3x³ + 1/2x² - 2x + 5
f'(x) = x² + x - 2
nilai maksimum f'(x) = 0
x² + x - 2 = 0
(x + 2)(x - 1) = 0
x = -2 atau x = 1
f(-2) = 1/3(-2)³ + 1/2(-2)² - 2(-2) + 5
= -2 2/3 + 2 + 4 + 5
= 8 1/3 (nilai maksimum)
f(1) = 1/3(1)³ + 1/2(1) - 2(1) + 5
= 1/3 + 1/2 - 2 + 5
= 3 5/6(nilai minimum)
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8 1/3
Penjelasan dengan langkah-langkah:
f(x) = 1/3x³ + 1/2x² - 2x + 5
f'(x) = x² + x - 2
nilai maksimum f'(x) = 0
x² + x - 2 = 0
(x + 2)(x - 1) = 0
x = -2 atau x = 1
f(-2) = 1/3(-2)³ + 1/2(-2)² - 2(-2) + 5
= -2 2/3 + 2 + 4 + 5
= 8 1/3 (nilai maksimum)
f(1) = 1/3(1)³ + 1/2(1) - 2(1) + 5
= 1/3 + 1/2 - 2 + 5
= 3 5/6(nilai minimum)