If b is the harmonic mean between a and c, then prove that `(1)/(b - a) + (1)/(b - c) =
Channel: Doubtnut
Date: 2020-01-28

If b is the harmonic mean between a and c, then prove that `(1)/(b - a) + (1)/(b - c) = (1)/(b) + (1)/(c)`