I try to draw statistic functions such as Normal,t-student


I mean: something like y=1/(sigma*Math.sqrt(2*Math.PI)))*
Math.exp(-0.5*Math.pow((x-mu/sigma), 2)).
y=f(x);




My Java level is not very good and I am looking for advice or
solutions.
I've tried to use pixel system but i`m not able to do it in this way.
Thanks.