prove this one.

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- Jun 14th 2012, 09:28 AMsrirahulanfix IT
prove this one.

- Jun 14th 2012, 09:44 AMmfbRe: fix IT

Tricky to prove that both are equal. Is there a typo somewhere?

And apart from that: Your approach so far? What did you try, what did you find out? - Jun 14th 2012, 09:49 AMReckonerRe: fix IT
- Jun 14th 2012, 09:52 AMHallsofIvyRe: fix IT
- Jun 14th 2012, 10:10 AMHallsofIvyRe: fix IT