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JEE Math Practice Question

If $${{dy} \over {dx}} = {{{2^{x + y}} - {2^x}} \over {{2^y}}}$$, y(0) = 1, then y(1) is equal to :

  1. A.log2(2 + e)
  2. B.log2(1 + e)
  3. C.log2(2e)
  4. D.log2(1 + e2)

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