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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 Apr 2008 10:12:18 IST
    Subject: try this
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sumit_grg (0)

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12+(12+22)+(12+22+32)+...........UPTO 22nd term is
    
[Post New]11 Apr 2008 10:13:33 IST
    Subject: Re:try this
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sandeepramesh (1247)

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tr = sigma r^2 = r(r+1)(2r+1)/6
Sn = sigma tr
 
Use the formulas thats all
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[Post New]11 Apr 2008 10:31:20 IST
    Subject: Re:try this
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sumit_grg (0)

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can you explain me
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[Post New]11 Apr 2008 10:42:03 IST
    Subject: Re:try this
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sweet08 (72)

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=sigma(r^3/3+r^2/2+r/6)
 ={n^2(n+1)^2}/12+n(n+1)(2n+1)/12+n(n+1)/12
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[Post New]11 Apr 2008 10:42:28 IST
    Subject: Re:try this
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anandghegde (1707)

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yes yes.....expand tr and use the formulas for sigma n^3 and n^2 and all
"I a universe of atoms.......an atom in the universe"
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[Post New]11 Apr 2008 20:33:45 IST
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hhitesh_1 (79)

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is the answer 98923?
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