<P> Note that there is no general rule for the case q / 0; it all depends on the way 0 is approached . Indeterminate forms--for instance, 0 / 0, 0 × ∞, ∞ − ∞, and ∞ / ∞--are also not covered by these rules, but the corresponding limits can often be determined with L'Hôpital's rule or the Squeeze theorem . </P> <P> In general, from knowing that </P> <Dl> <Dd> lim y → b f (y) = c (\ displaystyle \ lim _ (y \ to b) f (y) = c) and lim x → a g (x) = b (\ displaystyle \ lim _ (x \ to a) g (x) = b), </Dd> </Dl> <Dd> lim y → b f (y) = c (\ displaystyle \ lim _ (y \ to b) f (y) = c) and lim x → a g (x) = b (\ displaystyle \ lim _ (x \ to a) g (x) = b), </Dd>

Explain why there is no value l for which lim