Ig,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:@ HEE@@?@ @@@ܿj1?@@d2??h!@$$$fffffff@???????fffffff@E5?_`acde f@mX.5(t+2)(t-1)(t-3)t9(x,y) = (.5(t+2)(t-1)(t-3),t); 0.000000 <= t <= 3.600000ͥL-d2??h!@$$${Gz@???????{Gz@E5?hlptx|DH.5(-t+2)(-t-1)(-t-3)-t=(x,y) = (.5(-t+2)(-t-1)(-t-3),-t); 0.000000 <= t <= 2.470000xyzJXT@@@@@@@@@@@@@@@@@@@@@@@@@@@@ H H H(x,y) = (.5(t+2)(t-1)(t-3),t); 0.000000 <= t <= 3.350000`by1%@/xō@(x,y) = (.5(-t+2)(-t-1)(-t-3),-t); 0.000000 <= t <= 3.800000`by1%@/qYR@