import rhinoscriptsyntax as rs, math
def graph(f, g, t0, t1, dt):
	rs.AddPolyline([(f(t), g(t), 0) for t in [t0 + i*dt for i in range(int((t1-t0)/dt)+1)]])
f = lambda t: t * math.sin(t)
g = lambda t: t * math.cos(t)
graph(f, g, -1, 12, 0.01)