If y = 3 sin(-4x), dy/dx is
- 12x cos (4x)
- -12x cos (-4x)
-
-12 cos (-4x)
- 12 sin (-4x)
The correct answer is: C
Explanation
y = 3 sin(-4x)
dy/dx = 3 x - 4 cos (-4x)
= -12 cos (-4x)