3338.sagews

def f(a,n=100):
    if a< sqrt(n):
        return a;
    else:
        return n/a;

p = plot(f, x, 2, 100, thickness=4,legend_label="LB") + plot(100/x, x, 2 ,100, color="red", thickness=2, legend_label="UB")

p.show(xmin=0, xmax=100, ymin=0)