Answers

2016-07-17T14:22:15+08:00
A harmonic progression (or sequence) is a progression formed by taking the reciprocals of an arithmetic progression.
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So you are going to make the numerator the same numbers?
Nope. The harmonic sequence is the revised of arithmetic sequence.
Sorry. Yes! You are going to make a numerator of the same numbers.
2016-07-17T14:39:00+08:00
It is a sequence of numbers a1a2,a3,… such that their reciprocals 1/a1, 1/a2, 1/a3, and so on... form an arithmetic sequence (numbers separated by a common difference). 
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