Is there an easy method to construct a node (and hence a label) at a zero of a function, i.e. at the intersection of the function with the
x-axis? The examples I found were somehow too complicated, and following the KISS principle, I was wondering if there is an elementary method to achieve this.
Edit: To be a bit more precise: I would like to obtain a tick label at the zero of an arbitrary function. The zero should be calculated by the program (so if this is automation, then automation is needed).