G
Guest
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Determine the type of each singularity of the given function. If the singularity is removable, define the function at that point so that it will be analytical there.
\(\displaystyle \cos{(\frac{1}{z})}\)
\(\displaystyle \frac{1}{(z\,-\,1)(z\,-\,2)^2}\)
\(\displaystyle \cos{(\frac{1}{z})}\)
\(\displaystyle \frac{1}{(z\,-\,1)(z\,-\,2)^2}\)