Re: limit
Hi ↑ stuart clark:,
Hint: You can also use 
Skrytý text:So

(1) and

(2)
If we multiply the terms of the series (2) by

, we get series of pair terms from series (1) and

(3)
Thus we obtain the odd terms of the series (1) as difference (1)-(3).
Response: So

Srdecne Vanok
The respect, the politeness are essential qualities...and also the willingness.
Do not judge the other one.
Ak odpovedam na nejaku otazku. MOJ PRINCIP NIE JE DAT ODPOVED ALE UKAZAT AKO SA K ODPOVEDI DOSTAT