Pertanyaan :
Jawaban :
Misal, 3x + 1 = u
du = 3 dx
dx = du/3
du = 3 dx
dx = du/3
∫ (3x + 1)^10 dx = ∫u^10 du/3
= 1/3 ∫u^10 du
= (1/3)(1/11)(u^11) + C
= 1/33(u^11) + C
= 1/33(3x + 1)^11 + C