x+1/x-1=a/b and 1-y/1+y=b/a then the value of x-y/1+xy is

  1.  a2-b2/2ab
  2.  a2+b2/2ab
  3.  a2-b2/ab
  4. 2ab/a2-b2
mohit007 Default Asked on 22nd March 2016 in Maths.
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  • 1 Answer(s)

    Answer: (4) 2ab/(a^2 – b^2) 

    Anurag Mishra Professor Answered on 11th May 2016.
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