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If a, b, c are in hp, then b is related with a and c as _________(a) 2(^1⁄b) = (^1⁄a + ^1⁄c)(b) 2(^1⁄c) = (^1⁄b + ^1⁄c)(c) 2(^1⁄a) = (^1⁄a + ^1⁄b)(d) None of the mentionedI had been asked this question in my homework.The question is from Harmonic Sequences in chapter Basic Structures: Sets, Functions, Sequences, Sums and Matrices of Discrete Mathematics

Answer»

Correct option is (a) 2(^1⁄b) = (^1⁄a + ^1⁄C)

The best EXPLANATION: ^1⁄a, ^1⁄b, ^1⁄c willl be in airthmentic SERIES and ^1⁄b will be the AM of a, c.



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