dibantu yahh nomor 9 dengan cara aturan rantai

jawab
turunan

f(3 - x) = (1 + 3x)⁴
f(x) = (1+ 3(3 - x))⁴
f(x) = (1 + 9 - 3x)⁴
f(x) = (10  - 3x)⁴
y= (10 - 3x)⁴

t = 10  -3x
dt/dx = - 3
y = t⁴
dy/dt = 4 t³

y' = dy/dx
dy/dx = dy/dt. dt/dx
y' =  4 t³ (-3)
y' = -12 (10-3x)³
f' (3) = 12(10-9)³
f' (3) = 12