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It has, unfortunately, become customary to use the notation

to pose a question rather than to stand for the value of the limit. For
example, you will see written exercises such as
``Find the following if it exists:''

Strictly speaking, this is nonsense, as the notation in the display was said to
stand for the limit, so how can there be any question as to its existence.
More properly, the question should be put, ``Does 1/x have a limit as x
approaches ?''
David G Radcliffe
8/18/1998