need a formula for this expression

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- Sep 1st 2010, 06:39 AMgrgrsanjayneed to derive a formula
need a formula for this expression

- Sep 1st 2010, 06:47 AMAckbeet
See here.

- Sep 1st 2010, 07:05 AMgrgrsanjay

i need derivation for this expression - Sep 1st 2010, 07:09 AMAckbeet
Right. Well, I would probably prove the numerator and denominator sums separately, using induction. Then you'd pretty much be done.

- Sep 1st 2010, 07:15 AMgrgrsanjay
- Sep 1st 2010, 07:42 AMSoroban
Hello, grgrsanjay!

What course are you taking?

These derivations are not difficult ,

. . but if we are limited to basic Algebra,

. . they will take*pages and pages!*

- Sep 1st 2010, 06:13 PMgrgrsanjay
oh OK anyway i got the answer

thank you guys :( - Sep 1st 2010, 06:20 PMAckbeet
Not exactly sure why you're frowning. If you got the answer on your own, that's the best result! That means you own the answer, and you'll understand the problem a lot better than if I were to simply show you the answer.