If `H` is the harmonic mean between `Pa n dQ` then find the value of `H//P+H//Qdot`

If H be the harmonic mean of a and b then find the value of H/a+H/b-2

If H is the harmonic mean of P and Q, then the value of H/(P)+H/(Q) is

If the harmonic mean between a and b be H, then the value of (1)/(H-a)+(1)/(H-b) is-

If H_(1).H_(2)....,H_(n) are n harmonic means between a and b(!=a), then the value of (H_(1)+a)/(H_(1)-a)+(H_(n)+b)/(H_(n)-b)=

Statement-I: If H is the harmonic mean between a and b then (H+a)/(H-a)+(H+b)/(H-b)=(1)/(2) Statement -II: If H is the harmonic mean between x and y then H=(2xy)/(x+y)

8.If H1,H2,......, H2010are 2010 harmonic means between a and b(#a) ,then value of (H_(1)+a)/(H1-a)+(H_(2010)+b)/(H_(2010)-b) is equal to