Maths-
General
Easy

Question

The function f left parenthesis x right parenthesis equals stretchy integral subscript 0 end subscript superscript x end superscript   fraction numerator d t over denominator t end fraction satisfies

  1. f(xy)=f(x)+f(y)  
  2. f open parentheses fraction numerator x over denominator y end fraction close parentheses equals f left parenthesis x right parenthesis plus f left parenthesis y right parenthesis    
  3. f left parenthesis x y right parenthesis equals f left parenthesis x right parenthesis plus f left parenthesis y right parenthesis    
  4. None of these.    

The correct answer is: f left parenthesis x y right parenthesis equals f left parenthesis x right parenthesis plus f left parenthesis y right parenthesis

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