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If af(x+1)+bf(1/(x+1))=x ,x!=-1,a!=b ,t ...

If `af(x+1)+bf(1/(x+1))=x ,x!=-1,a!=b ,t h e nf(2)` is equal to (a) `(2a)/(2(a^2-b^2))` (b) `a/(a^2-b^2)` (c)`(a+2b)/(a^2-b^2)` (d) none of these

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