harmonic progression

A Harmonic Progression is defined as that in which reciprocal of its terms are in Arithmetic Progression.

If a1 , a2 , a3 , ….are in H.P , then 1/a1 , 1 / a2 , 1 / a3 ,…. are in A.P.

n-th term of Harmonic progression

Note:

1.Generalized formula is not available to find sum of n terms of H.P. 

2. Any term can’t be zero in H.P