I am new with Tikz and I have a question which I did not manage to solve looking at other posts. I was wondering how to draw a figure in 2D, in which the first component (the x) is a function of x itself, say for simplicity exp(x), while the second is another function of a 1D Brownian motion.
I found some good suggestions here on how to draw a 2D Brownian motion, but I could not do it on my own. I get stuck if I try to insert a function in the command
Do you have any idea? Thanks a lot in advance.