integral (2x-1) pangkat 2 dx

InTegraL

Misal :
u = 2x - 1
du/dx = 2
dx = 1/2 du

∫(2x - 1)² dx
= ∫u² . 1/2 du
= 1/2 ∫u² du
= 1/2 . 1/3 u³ + C
= 1/6 (2x - 1)³ + C