Show that Ʃn i2 = n(n+1)(2n+1)/6, n>=1 i=1 Should I use the formula Ʃn i = n(n+1)/2 i=1 and if so, how would I go about doing this?
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Use induction.
Originally Posted by jaclyn91 Should I use the formula Ʃn i = n(n+1)/2 i=1 Yes, this works. Now, use this simple fact: So the sum becomes now this is I think you can take it from there.
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