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Question

If tanh x equals fraction numerator 3 over denominator 5 end fraction then sin h left parenthesis 2 x right parenthesis equals

  1. fraction numerator 15 over denominator 8 end fraction    
  2. fraction numerator 15 over denominator 17 end fraction    
  3. fraction numerator 18 over denominator 17 end fraction    
  4. fraction numerator 17 over denominator 8 end fraction    

The correct answer is: fraction numerator 15 over denominator 8 end fraction


    Tanh invisible function application x equals 3 over 5 not stretchy rightwards double arrow sinh invisible function application 2 x equals fraction numerator 2 tanh invisible function application x over denominator 1 minus tanh squared invisible function application x end fraction

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