Maths-
General
Easy

Question

If f left parenthesis x right parenthesis equals l o g invisible function application open parentheses fraction numerator 1 plus x over denominator 1 minus x end fraction close parentheses then f open parentheses x subscript 1 end subscript close parentheses plus f open parentheses x subscript 2 end subscript close parentheses equals

  1. f open parentheses fraction numerator x subscript 1 end subscript plus x subscript 2 end subscript over denominator 1 plus x subscript 1 end subscript x subscript 2 end subscript end fraction close parentheses    
  2. f open parentheses fraction numerator x subscript 1 end subscript plus x subscript 2 end subscript over denominator 1 minus x subscript 1 end subscript x subscript 2 end subscript end fraction close parentheses    
  3. f open parentheses fraction numerator x subscript 1 end subscript minus x subscript 2 end subscript over denominator 1 plus x subscript 1 end subscript x subscript 2 end subscript end fraction close parentheses    
  4. f open parentheses x subscript 1 end subscript close parentheses minus f open parentheses x subscript 2 end subscript close parentheses    

The correct answer is: f open parentheses fraction numerator x subscript 1 end subscript plus x subscript 2 end subscript over denominator 1 plus x subscript 1 end subscript x subscript 2 end subscript end fraction close parentheses


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