You know that , , and , don't you? So, in polar coordinates, your function is
Why didn't you write that at least?
Now, and are always less than 1 so . What can you say about the limit, as r goes to 0, of ?
i did try that earlier here http://www.mathhelpforum.com/math-he...tml#post574521, but nobody replied. (thanks for your help in that thread)
whatever, leave it. here . now, as we get is it correct?