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If H(1), H(2),…….,H(n) are n harmonic me...

If `H_(1)`, `H_(2)`,…….,`H_(n)` are n harmonic means between a and b `( ne a)` then value of `(H_(1)+a)/(H_(1)-a)+(H_(n)+b)/(H_(n)-b)` is equal to ___________.

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