If (x+1)/(x-1)=a/b and 1-y/1+y=b/a, Then the Value of x-y/1=xy is :

  1. (a2-b2)/ab
  2. 2ab / (a2-b2)
  3. (a2-b2)/2ab
  4. (a2+b2)/2ab
Anurag Mishra Professor Asked on 17th November 2015 in Maths.
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Answer:  (2) 2ab/(a^2 – b^2) 

Anurag Mishra Professor Answered on 17th November 2015.
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