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1. যদি f(x) = (3x + 1)/(3x - 1) হয়, তাহলে {f(x) + 1}/{f((x) - 1} এর মান কত?

  • A. 4x
  • B. 4x
  • C. 4x
  • D. 4x

Answer: Option D

Explanation:

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