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Algebra Level pending

If a 1 , a 2 , a 3 , … a_1, a_2,a_3,\ldots follows a harmonic progression , and f ( k ) = ∑ r = 1 n ( a r − a k ) \displaystyle f(k) = \sum_{r=1}^n (a_r - a_k) , then a 1 f ( 1 ) , a 2 f ( 2 ) , a 3 f ( 3 ) , … , a n f ( n ) \dfrac {a_1} {f(1)},\dfrac {a_2} {f(2)},\dfrac {a_3} {f(3)},\ldots, \dfrac {a_n} {f(n)} follows a/an __________ \text{\_\_\_\_\_\_\_\_\_\_} .

Harmonic progession None of these choices Arithmetic progression Geometric progression

Prasath M by Prasath M , 20, India

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1 solution

Budi Utomo
Feb 20, 2016

Harmonic Progression − > -> Harmonic Progression

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can you do with steps? or with any logic reason?

Prasath M - 5 years, 3 months ago

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