Unformatted text preview: f ( z ) = | z | 2 is diﬀerentiable only at z = 0. [ Suggestion: For z 6 = 0, use the fact that g ( z ) = z is diﬀerentiable but that h ( z ) = z is not .] Exercise 3. 1.5.7...
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- Fall '11
- Derivative, Complex number, Logarithm, Complex logarithm