If y = 3 cos(x/3), find dy/dx when x = (3Ï€/2)
MATHEMATICS
JAMB 2004
If y = 3 cos(x/3), find dy/dx when x = (3Ï€/2)
- A. 1
- B. -3
- C. 2
- D. -1
Correct Answer: D. -1
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