Points of the Dirichlet function

We distinguish the rational points P_i= (i/n,1) and the irrational points Q = (i/(n+

/n,0). The lines f and g show they are distinct points of the graph of the Dirichlet function:

(x)=1 for rational, and

(x)= 0 for irrational x.

Experiment by changing some elements

_iYou may change the values of n, and i (recommended to have the same upper bound).

Select all that apply