Turunan dari y = (3x+1)^4

Turunan

y = (3x +1)⁴

u= 3x + 1
du/dx = 3
y = u⁴
dy/du = 4 u³

y' = dy/dx
dy/dx = dy/du . du/dx
y' = 4 u³. (3)
y' = 12 u³
y'  = 12 (3x +1)³