I have a question that may seem strange and may not even make sense. Suppose I have a function f(x)=1/x. Now let's say I'm working in the complex plane and I want to plot this curve with f(x) being the imaginary axis. Is the following:

C=x+i*1/x

considered a complex number or a function (I could make the f(x) curve by computing C for all x)? Does the notation C(x)=x+i*1/x make sense if it is a function?

Thanks.