Maths-
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Question

If L straight t subscript x not stretchy rightwards arrow 0 end subscript fraction numerator log begin display style space end style left parenthesis 3 plus x right parenthesis minus log space left parenthesis 3 minus x right parenthesis over denominator x end fraction equals k then k=

  1. 0
  2. negative 1 third
  3. 2 over 3
  4. fraction numerator negative 2 over denominator 3 end fraction

The correct answer is: 2 over 3

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