Question

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Formula for calculating
Harmonic progression (HP)
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》》Priyanshu 《《​

Answer 1

A series of terms is known as a HP series when their reciprocals are in arithmetic progression. Example: 1/a, 1/(a+d), 1/(a+2d), and so on are in HP because a, a + d, a + 2d are in AP. The nth term of a HP series is Tn =1/ [a + (n -1) d].

Answer 2

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☑Formula is

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$\frac{1}{a + ( n- 1)d}$