Hello, Robin. Thanks for your reply. -- On Fri, Jan 16, 2004 at 03:39:48PM +0000, Robin Hankin wrote:
> the differential of sin(z) is cos(z), over the whole complex plane. > > If you have a function in terms of its real and imaginary components, > and you know that the function is differentiable, then use the > Cauchy-Riemann equations. Ok, say I have z - _extremely_ long and hard complex _expression_. What if I'd like to take analytic derivative from Arg(z)? -- Timur. ______________________________________________ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
