Use the formal definition of limit to infinity of complex functions to prove that lim z→z0 (f(z)) = ∞ if and only if lim z→z0 1/f(z) = 0.
Added by Shawn T.
Step 1
This means that for any positive real number M, there exists a positive real number δ such that if 0 < |z - z0| < δ, then |f(z)| > M. Now, let's consider lim z→z0 1/f(z). We want to show that this limit is equal to 0. To do this, we need to show that for any Show more…
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