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text  If  end text y equals e to the power of 4 x end exponent plus 2 e to the power of negative x end exponent satisfies the relation fraction numerator d cubed y over denominator d x cubed end fraction plus A fraction numerator d y over denominator d x end fraction plus B y equals 0 then value of A and B respectively are:

  1. –13, 14
  2. –13, –12
  3. –13, 12
  4. 12, –13

The correct answer is: –13, –12

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