Need some help.....
Can saomeone explain, plz, why if L(z) is a Möbius transformation
$$L'(\infty) = - (ad-bc)/c ^{2}$$

Question

Need some help.....
Can saomeone explain, plz, why if L(z) is a Möbius transformation
$$L'(\infty) = - (ad-bc)/c ^{2}$$

anonymous · Answer

becouse i get a opsite sign.......

anonymous · Answer

I'm fairly certain this is algebraic topology, right?

anonymous · Answer

complex analysis

anonymous · Answer

Hmm, for everything we can't do, you can always try http://math.stackexchange.com/ . I can't help with complex analysis, but let's try calling the geniuses here. ;) @myininaya @FoolForMath @TuringTest @JamesJ @KingGeorge

anonymous · Answer

TuringTest said he has no idea complex analysis

anonymous · Answer

Ack, sorry, I tried. I don't think there's a non-complex analysis method to solve this (that I'm aware of).

anonymous · Answer

As I said, try the StackExchange link I provided earlier--they're smart people.

anonymous · Answer

can't sucseed to post a question there, it says it doesn't meet their standart or something like that, :)

anonymous · Answer

That's interesting. Do they say what standards?

anonymous · Answer

No,:) It just when i try to post i get this message....

anonymous · Answer

@zarkon maybe you can help

anonymous · Answer

Then you're probably not meeting the minimum post length requirements. Add in some of your own thoughts. Make your title more precise.

anonymous · Answer

k, thx

anonymous · Answer

@nikvist