ike tents, sine functions and parabolas can be extracted from and represent the behavior of higher dimensional, nonlinear differential equations (see Devaney, 1989; Schuster, 1989 or Moon, 1992 for intuitive descriptions). They varied a parameter, such as the height of the tent or parabola, to systematical

ER HOLDER,DOUG A MYERS,JAMES DELANEY,KATHY RAMSING,BYRON L COOK,CYNTHIA