GIF89aN@@@,N0I8ͻ`(dihl+O@ B.D#3/Hn@Юjdd0R e3+#ov1Plu=tPaJmvu}.6>ywro2h@NBU|;k 5Yf@}05yQp:{o0;_i5 \Ѫ  TP n=?˔0Ruk|Fn4)֍47|SmBc](}!#Q5huxIDI)NJT}g 1ARQ*"B1OAm0uP?G,\T.%LF˪g] 0gV*ġ+8Ko-0Q_+lN(2'YQ '3k,:ei11 %KȓЙ7g^R :evcFd%Zې(J$ʴJ%73^y %SP(} J4ƍuֳSڸ+ԹY7Dkln8 >>% E^VS鰗8Vw0y[UoGXIIK1 3[u >ӫ`ѝ;<{GP2nyKdmK 4%`aE'=<2E HZB#~J! MathType001 F(x,y,t)=xcost+2ysint-4=0Ft(x,y,t)=-xsint+2ycost=0;