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If y = 3 sin(-4x), dy/dx is

Mathematics
JAMB 2003

If y = 3 sin(-4x), dy/dx is

  • A. 12x cos (4x)
  • B. -12x cos (-4x)
  • C. -12 cos (-4x)
  • D. 12 sin (-4x)
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Correct Answer: Option C
Explanation

y = 3 sin(-4x)
dy/dx = 3 x - 4 cos (-4x)
= -12 cos (-4x)

There is an explanation video available below.

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