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1. যদি x²+3xy+5y²=10 হয়, তবে dy/dx সমান-

  • A. (2x+3y)/(3x+10y)
  • B. (2x+3y)/(3x+10y)
  • C. (2x+3y)/(3x+10y)
  • D. (2x+3y)/(3x+10y)

Answer: Option D

Explanation:

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