Let X be an arbitrary set and consider defined by

I need to find where . Don't know how... help?

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- September 27th 2009, 10:48 AMthaopandaFind ball B
Let X be an arbitrary set and consider defined by

I need to find where . Don't know how... help? - September 27th 2009, 04:20 PMredsoxfan325
- September 27th 2009, 04:57 PMthaopanda
Well, I'm not given anymore than what I wrote to the problem, so I'm assuming it would be the second case.

So is it that ? And how would look? I think I'm just lost as to how you would define it or something...

awesome username btw :) not only do the red sox rock, but 325 is my birthday, hehe - September 27th 2009, 05:00 PMredsoxfan325
is also all of , because the distance between every point is equal to (i.e. ).

- September 27th 2009, 05:13 PMPlato
- September 27th 2009, 06:07 PMthaopanda
I had another question, same concept:

let d: .

the function this time is |arctan x - arctan y|, what is the ? - September 27th 2009, 08:22 PMredsoxfan325