I,dd   1Courier NewSymbol New1Courier New1Courier NewTimes New RomanTimes New Roman1Courier New1Courier New1Courier New1Courier New0:Q<0:Q<0:Q<0:Q<}d<_ p {?@@4333333@?@@@@@@@@033333??@^ߛOw?̌???{H:@VHff@@?@ @@@ ܿj1?@@d2??h!@$$$ףp= ף@???????ףp= ף@E5? HPX<hxt.35(t+2)(t-1)(t-3):(x,y) = (t,.35(t+2)(t-1)(t-3)); 0.000000 <= t <= 3.760000ͥL-d2??h!@$$$fffffff@???????fffffff@E5?  $pt-t.35(-t+2)(-t-1)(-t-3)>(x,y) = (-t,.35(-t+2)(-t-1)(-t-3)); 0.000000 <= t <= 2.600000xyzJXT@@@@@@@@@@@@@@@@@@@@@@@@@@@@ H H H (x,y) = (t,.35(t+2)(t-1)(t-3)); 0.000000 <= t <= 3.760000`by1%@/xō@((x,y) = (-t,.35(-t+2)(-t-1)(-t-3)); 0.000000 <= t <= 2.60000`by1%@/qYR@