Using we can express
Which is indeterminate so we can do a number of things, we could use L'Hopital's rule (twice?) or expand top and bottom as power series about x=0 or ...
However we do this we get a finite limit.
(P.S. you are allowed to use a calculator or some other mechanical assistance to get some idea of what the limit might be, which provides a useful cross check on your analysis)
(P.P.S. I'm sure that the above quoted text is not what it said when I started answering this question!)
CB
Thank you very much. That idea never ocurred to me; I will work in that way too.
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about the p.p.s ;
I am terribly sorry for the confusion; actually, I didn't realize the mistake, and after I posted my reply saying
,
I realized it was mistaken and totally editted my post. Perhaps I should have posted another reply. I am sorry.