I want to plot the following function in R
f(w) = 1/(1-5*e^(-iw))
where i is the square root of -1. Can R handle complex numbers in plotting?
This should get you started (mostly by demonstrating the notation R uses for representing complex numbers and the exponential function).
f <- function(x) 1/(1-5*exp(-(0+1i)*x))
x <- seq(0, 2*pi, by=0.1)
plot(f(x))
来源：https://stackoverflow.com/questions/20109257/how-can-i-plot-a-function-in-r-with-complex-numbers