SET WINDOW -0.76,-0.73,1.17,1.2 FOR k=7 TO 100 SET COLOR MIX(k) 1,k/100,k/100 NEXT k FOR i=-0.76 TO -0.73 STEP 0.03/500 FOR j=1.17 TO 1.2 STEP 0.03/500 LET x=0.5 LET y=0 WHEN EXCEPTION IN FOR k=1 TO 100 LET a=x-x^2+y^2 LET b=y-2*x*y LET x=a*i-b*j LET y=a*j+b*i NEXT k SET LINE COLOR 1 USE SET LINE COLOR k END WHEN PLOT LINES:i,j NEXT j NEXT i END