Limiting functions

Hi all,

I am goint to make xy-plots of three functions f(x), g(x) and h(x). The function h(x) depends of g(x) which depends of f(x).

I would like to set up for which values of x each function should apply e.g. f(x) for x =A-B, g(x) for x=B-C and h(x) for x=C-D.

How do I do this? Is it easier to put the range on the functions or on the plot?

I am using Mathcad Prime 2.0.

I hope you can help me out.

Thanks in advance.

-Ronnie