Harmonic Progression (H.P)
If reciprocal of each term of a progression are in A.P., then the progression is called Harmonic progression.
The standard form of a H.P. is
General Term of a H.P.
General term or nth term of a H.P. is given by
If H.M. between two given quantities a and b be H, then a, H, b, are in H.P. then