Proof that $\left(\frac{z}{z}\right)^2$ has no limit when $z \to 0$.
Added by Cristian S.
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A limit exists if the function approaches a single value as z gets closer and closer to 0. In other words, if we can make the function's output arbitrarily close to a certain value by choosing z sufficiently close to 0, then that value is the limit of the Show more…
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