from java.lang import Math 
from jhplot import *

class MyFunc(FNon):   
    def value(self, x):        
              y=x[0]*x[0]*Math.sqrt(x[0])
              if (x[0]<3): y=0
              return y 

c1 = HPlot()  # plot data and the fit function
c1.visible();   c1.setAutoRange()
pl = MyFunc("Title",1,0)   # assume 1 variable, 0 parameters 
f1=F1D(pl,0,10) # convert to plottable function (0-10) 
c1.draw(f1)