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Question

If y = root index 3 of x plus root index 3 of x plus root index 3 of x plus horizontal ellipsis t o blank infinity end root end root end root then fraction numerator d y over denominator d x end fraction =

  1. fraction numerator 1 over denominator open parentheses 3 y to the power of 2 end exponent minus 1 close parentheses end fraction    
  2. fraction numerator 1 over denominator open parentheses 3 y to the power of 2 end exponent plus 1 close parentheses end fraction    
  3. fraction numerator 1 over denominator open parentheses 2 y minus 1 close parentheses end fraction    
  4. fraction numerator 1 over denominator open parentheses 2 y plus 1 close parentheses end fraction    

The correct answer is: fraction numerator 1 over denominator open parentheses 3 y to the power of 2 end exponent minus 1 close parentheses end fraction


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