Algebra

Hot goIITian

Joined: 7 Feb 2011
Post: 140
29 Mar 2012 14:43:36 IST
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Series..
Engineering Entrance , JEE Main , JEE Main & Advanced , Mathematics , Algebra

 Find the sum of the series:

upto n terms.. 



Comments (10)


New kid on the Block

Joined: 24 Oct 2011
Posts: 6
29 Mar 2012 14:56:20 IST
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plz enter what series?

Hot goIITian

Joined: 7 Feb 2011
Posts: 140
29 Mar 2012 15:00:44 IST
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Please click the yellow button above answer button (after number of views) to view the series.
pooja garg's Avatar

Blazing goIITian

Joined: 23 Dec 2011
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29 Mar 2012 15:01:33 IST
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answer = ..........
pooja garg's Avatar

Blazing goIITian

Joined: 23 Dec 2011
Posts: 1180
29 Mar 2012 15:02:24 IST
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plz write series cant guess it ourselves.........

Hot goIITian

Joined: 7 Feb 2011
Posts: 140
29 Mar 2012 15:27:27 IST
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 Series: x/(1-x2) + x2/(1-x4) + x4/(1-x8)...

And for those who don't know ,since the series is in image format ,so it is not shown on the main page. You need to click the yellow button shown below. 

Mayank  Mittal's Avatar

Cool goIITian

Joined: 19 Feb 2011
Posts: 68
30 Mar 2012 11:55:20 IST
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 See this carefully this trick is useful in most of the series questions not only subtract or add 1 it may be different

so 

break every term like this and add them you'll get the answer reply if you like it

 


Blazing goIITian

Joined: 21 Mar 2012
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30 Mar 2012 11:58:47 IST
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amswer is 1/(1-x)-1/(1-x^2^n)

Blazing goIITian

Joined: 21 Mar 2012
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30 Mar 2012 12:03:07 IST
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my answer is 1/1-x - 1/1-x^2^n

Hot goIITian

Joined: 7 Feb 2011
Posts: 140
30 Mar 2012 12:03:35 IST
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 It was easy. I wonder why it didn't strike to me..Thanks..


Blazing goIITian

Joined: 21 Mar 2012
Posts: 1457
30 Mar 2012 12:07:54 IST
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mine is also correct like me toooooooooo



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