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Easy

Question

L t subscript x not stretchy rightwards arrow 0 end subscript fraction numerator square root of 1 plus x end root minus square root of 1 plus x squared end root over denominator square root of 1 minus x squared end root minus square root of 1 minus x end root end fraction

  1. 1
  2. 0
  3. -1
  4. 1 half

The correct answer is: 1

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