How to display/Plot a programmed function?

Hi!

I want to simulate the accuracy of the Euler-Polygonzugverfahren with MathCad.

The allgorithm is a numerical approximation which the accuracy depends on the variable "n" with a programmed recursive function of the velocity. (I'm not that familiar with programing)

Now my problem is: How can i display this function for n=6,10,20 timesteps in one diagram to visualize the accuracy?

Thanks in advance.