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Question Number 146504 by tabata last updated on 13/Jul/21
find the sigular point     (1)f(z)=ln∣z∣    (2)f(z)=((1−cosz)/(sinz^2 ))
$${find}\:{the}\:{sigular}\:{point}\: \\ $$$$ \\ $$$$\left(\mathrm{1}\right){f}\left({z}\right)={ln}\mid{z}\mid \\ $$$$ \\ $$$$\left(\mathrm{2}\right){f}\left({z}\right)=\frac{\mathrm{1}−{cosz}}{{sinz}^{\mathrm{2}} } \\ $$

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