>	deq1:=diff(x(t),t)=x(t)+y(t)-z(t); deq2:=diff(y(t),t)=y(t)+z(t)-x(t); deq3:=diff(z(t),t)=z(t)+x(t)-y(t);

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DEplot3d([deq1,deq2,deq3], [x(t),y(t),z(t)],t=0..4,[[x(0)=1,y(0)=0,z(0)=2]],stepsize=.005, scene=[t,x(t),y(t)],linecolour=sin(t*Pi/2),orientation=[0,90]); DEplot3d([deq1,deq2,deq3], [x(t),y(t),z(t)],t=0..4,[[x(0)=1,y(0)=0,z(0)=2]],stepsize=.005, scene=[t,y(t),z(t)],linecolour=sin(t*Pi/2),orientation=[0,90]); DEplot3d([deq1,deq2,deq3], [x(t),y(t),z(t)],t=0..4,[[x(0)=1,y(0)=0,z(0)=2]],stepsize=.005, scene=[t,z(t),x(t)],linecolour=sin(t*Pi/2),orientation=[0,90]);

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