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Most Important Selected Qs for JEE AdvancedMathematicsTrigonometry

If x+ y x x R then y+ is equal to

Options

  1. A1 2
  2. B1
  3. C2
  4. D-1

Correct answer

B. 1

Step-by-step solution

aligned & As x+ y x x R & Let x=- 2 y 1 y=1 & 1+ x x & x- x 1 & ^2 +1 =1 =0 y+ =1+0=1 aligned

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