Jika f’(x) = 8x – 2 dan f(5) = 36, maka f(x) = …

InTegraL

f'(x) = 8x - 2

f(x) = ∫(8x - 2) dx
f(x) = 8x²/2 - 2x + C
f(x) = 4x² - 2x + C

f(5) = 36
4.5² - 2.5 + C = 36
100 - 10 + C = 36
C = -54

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f(x) = 4x² - 2x - 54