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Tuesday, 03 March 2026
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If y = 3 sin(-4x), dy/dx is

If y = 3 sin(-4x), dy/dx is
Take Free Practice Test On 2026 JAMB UTME, Post UTME, WAEC SSCE, GCE, NECO SSCE
  • A 12x cos (4x)
  • B -12x cos (-4x)
  • C -12 cos (-4x)
  • D 12 sin (-4x)
Correct Answer: Option C
Explanation:
y = 3 sin(-4x)
dy/dx = 3 x - 4 cos (-4x)
= -12 cos (-4x)

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