GIF89aBl@@@,Bl0I8ͻ`(dihp,Ut|5cP pɨtJ ar0e6][zn/Cuۧ91X r F:dz?N2u&{ 7 _Z6{NĀBD LKEO]aBPKtױ Ƿ}@KL⤩Bzچ(ʏ:uFv0R+s5HQUTdO cySD:iBΰ"D mݣpNv P:;1.˃9ϜAxII섚3>z,Vmpw\iwcPAr [^(eddTHqRǸ\IňWmE K;R PBrW'fw}DrNڰx\wY3n _=*p;׼{vى#NW3e|{G{ୡ)Rvm)˨a>YlApǟIV\˜ b" v5т,PhybTա21m28 "\/FeaS'!;F6^sRX'%d2@alg YS0ucxzÔ}Chjz-X {elTÎuO>sT+><+LaOrYJ` 5u =7;$~j#'GƳ .mC_R }q.ygis4@p!$f! R^>!=i3  cIBf hʡV>G#4|h5KAZ8yE0KJ1K'e;nC66-N;7,B7Bk,N`8/qc FŢ䠑Xl2!E?%wMe=x0bFŝ\r(7hHͲ$KT•_ppSHBUhbp jz*0hKq e9t B ̓DB]@{}ir`߆olg_C`Ft [͌R?e?=JRcLQk+ B1*i"u+Na`0sӞ!lQ)E#80OHC=&F˟5JU8j$c:*ԐN ,[TۊsD^=pϽ.s`{ DdZͬf7z hGKҚMjWֱֺ$3ecZ:FL޲?魼֧u^=˙mejBK%!7oK) M2TJibQA{|W } ;WY=詽{)[z4h:`=*<+AăaK\.)Yc i$j9HZl3[) 4@e{1( Yx_9>Cݱ7ZŖO%xbXhw+znsv!-/M#z*xWQKG3*o2{ԤE7f&(PIBwgn1=P4 t]-WAvWQ%c)ui8'>}QGyxn'^ĽHA|;gɏ֓}6on_(|dZT5sv}?xMpljc ܰƞn]e>O+߰ϯ?!1B_^[AsYcoGP2K Z\GսYG)W",x.gafa{E}8a/|}gat399rpc}8s7aM" yWʔ&=qs{,9&}+k% ȃ R=ǂ/;e 0i.S-!{w?-Fy˦re(o TxatSI…mHy7r#4HBN}vd8nX-2|XyՇBQnC.h28jA-٠;3XcR32eut[H@2xt$jt\75 H<!'Ta7Qe0B7tmO5bD Dȍ'7nRh32!x`9~(qt1Q9j%Reh 1n X '\'`R $ձ00;>&G74>osxTRs@GEx3%a#J)Of e2@sv&7A)d'#S !Ԏ_6:2itjz֦nH_D–l #!fYLk@-ibzxpVF3%gwJix[l4!GtVW"Pc X PJHdyc;ŽKfThdjU:uWI]G*ЊkҚZ^ q{)`!qN)&u V.H^x2_8!vU qIUϑНsu @+uIE(gvT&\Uacv TE=کUQY9s 6{*T'sS&!%*Pvb)c/ڞRqjjY=)9 BZtFHN R:TZVJ ! MathType001 -2f(t)Fx(f(t),g(t),t)=-2g(t)Fy(f(t),g(t),t)   for each tFx(f(t),g(t),t)2f(t)+Fy(f(t),g(t),t)2g(t)=0  for each t.      (2);