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Ask iit jee aieee pet cbse icse state board community Community Discussion Question: try this
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[Post New]11 Mar 2008 19:24:38 IST
    Subject: try this
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akhil_o (2704)

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if Pr is the coefficient of xr in the expansion

(1+x)2(1+x/2)2(1+x/22)2(1+x/23)2......

prove that
Pr=22(Pr-1+Pr-2)/(2r-1)
and P4=1072/315
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[Post New]11 Mar 2008 21:01:41 IST
    Subject: Re:try this
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elastiboysai (2327)

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Nice question!
I was struggling on it with induction till
i figured dis 1 out!!
 
over 2 img
better downld img

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[Post New]11 Mar 2008 21:08:16 IST
    Subject: Re:try this
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elastiboysai (2327)

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As for the 2nd part
simple
 

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