Something

> plot([eval(f(v),m=83.8/1000),eval(f(v),m=40/1000),eval(f(v),m=20.2/1000)],v=-1000..1000,color=[red,yellow,blue]);
> plot([eval(F(v),m=83.8/1000),eval(F(v),m=40/1000),eval(F(v),m=20.2/1000)],v=0..1500,color=[red,yellow,blue]);