What is the value of : <munderover> &#x2211;<!-- ∑ --> <mrow class="MJX-TeXAtom-ORD">

Jaqueline Kirby

Jaqueline Kirby

Answered question

2022-06-25

What is the value of :
n = 1 n 2 + n + 1 3 n

Answer & Explanation

Zayden Andrade

Zayden Andrade

Beginner2022-06-26Added 22 answers

You have for | x | < 1
k = 0 x k = 1 1 x
k = 0 k x k = x ( 1 1 x )
k = 0 k 2 x k = x ( x ( 1 1 x ) )
Replace x with 1/3 and you will get the result.

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