Answer:
-12x³
(x⁴ +1)⁴
Step-by-step explanation:
y=1/(x^4+1)^3
y= (x⁴+1)-³
dy = d(x⁴+1)-³ × d(x⁴+1)
dx d(x⁴+1) dx
=-3.(x⁴+1)-³-¹× 4x³
= -12x³(x⁴+1)-⁴
= -12x³
(x⁴+1)⁴
Note: dx^n =(n. x^n-1)dx
dx dx
