Jawabanmu

2014-06-11T10:52:42+07:00
Aturai rantai:
u = 5 - 4x² maka u' = -8x
y = cos³ (5 - 4x²)
y' = 3 cos² (5 - 4x²) -sin (5 - 4x²) -8x
= 24x cos² (5 - 4x²) sin (5 - 4x²)