tlng bantu saya,penting bgt

Integral

f' (x) = 8 - 12x²
f(2) = -25

f(x) = ∫ f' (x) = dx
f(x)= ∫ (8 - 12x²) dx
f(x) = 8x - 4x³ + c
f(2) = - 25
8(2) - 4(8) + c = -25
16 - 32 + c = -25
-16 + c = - 25
c = - 9

f(x) = 8x - 4x³  - 9