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How do I solve these?

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- Jan 29th 2009, 12:26 PMronaldo_07[SOLVED] Complex Analysis
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How do I solve these? - Jan 29th 2009, 05:42 PMronaldo_07
I have solved this sorry.

- Jan 29th 2009, 05:43 PMronaldo_07
I have solved part a of this but not b

- Jan 29th 2009, 08:27 PMThePerfectHacker
$\displaystyle f'(0) = \lim_{z\to 0} \frac{f(z)-f(0)}{z-0} = \lim_{z\to 0} \frac{2z\bar z}{z} = \lim_{z\to 0}2\bar z = ?$