The map f(z)= conjugate of z is not differentiable, and you should be able to prove this from the definition.
Do you know how to calculate complex limits by breaking them up into their real and imaginary parts? It makes looking at that limit very easy
#4
skriabin
11
0
Thank you. Got it.
#5
AxiomOfChoice
531
1
While we're on the subject of complex limits, can anyone help me figure out what
<br />
\lim_{z\to 0} \text{Log } z<br />
is? (So we're talking about the principal logarithm here.)
I'm reviewing Meirovitch's "Methods of Analytical Dynamics," and I don't understand the commutation of the derivative from r to dr:
$$
\mathbf{F} \cdot d\mathbf{r} = m \ddot{\mathbf{r}} \cdot d\mathbf{r} = m\mathbf{\dot{r}} \cdot d\mathbf{\dot{r}}
$$