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Ask iit jee aieee pet cbse icse state board community Community Discussion Question: Question on sequences from BT
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[Post New]11 May 2008 14:07:08 IST
    Subject: Question on sequences from BT
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babanbanerjee (21)

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Question on sequences from BT


Find the sum of the following series ::


1+2(1+1/n)+3(1+1/n)^2..............................to n terms.


 


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[Post New]11 May 2008 14:43:16 IST
    Subject: Question on sequences from BT
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spideyunlimited (2686)

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S1 = 1

S2 = 4

S3 = 1 + 8/3 + 16/3 = 27/3 = 9

S4 = 16

S5 = 25


Clearly , Sn = n^2
---------------------------------------------------------------
* Gaurav Ragtah ( aka Artemis Fowl )


* Agent 'G' [sniper] - SD-6 (Alliance of Twelve)







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[Post New]11 May 2008 14:48:01 IST
    Subject: Re:Question on sequences from BT
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feynmann (1548)

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it is 1 + 2x + 3x^2 + ............. ( x = 1 + 1/n)


which is an AGP hence easily evaluated
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