ada yang tau jawaban matematika ini gak?? pliss senin dikumpul

f'(x) = x²

f(x) = 1/(2+1) x²⁺¹
      = 1/3 x³ + C

f(3) = 1
1/3 (3)³ + c = 1
1/3 x 27 + c = 1
9 + c = 1
c = 1 - 9
c = -8

maka
f(x) = 1/3 x³ - 8

Jawaban C