l ' l l ( ) \ ( ; ( ; , \ lO )t]('VA DAO TAO D I i K T I A O S A T C H A T L T ] ' O N GF I O C S T N I I( ; I O I NANI IIOC 20t2 - 2013 r rL._!,\_!1 Prr0-vrNrr r uri:rln crtiNtrrnf'c Mdn thi: Toirn l(tp Thoi gian ldm biti: 120 philt i l l u i I I I t[iAnt)C'hocac da thu'c: A(t : 2'r'-'l'r l B(t): l +-Y -ZX+l ) xt-l.r' +r- -)"r+i ? C(t): ^ ) ^ J xt+-lr' + j x - - u x + + tb rr) l'inh il'I(,x): A(-r)-2tl(.x)+ C(x) b) I'inhgi6 tri ciraM(-t) x: -S7: c ) ('ii giir tri r.rdo cua x d€ M(x) :0 khong? I t r r i2 ( - / , l i t J n t ) l ) I ' i n tx b i t :l : r + j l = r * t r ) I ' i n rq i rt r i l c r nn l - r Actu aA : l r - 2 + l z o t *kxhl i , r t h a yc l o i li:ii J.r / ,[tr;nt) L]atanr vai theo thu tr-rco gi6 120000dong 192000clOr-rg, l-14000 , , ' : ' r t r _ r ' , l , ' l-raico cung chieu clai,tarn th[r hai r,a tirn thr,rba c6 titrnr, [ tnr lirrLnhal.va tirr-rLirr"t 'l'ong err:r.' ;lrieLrr'()ng ba chi0u dei ld I lOnt,t6ng ba chi€u rdng li ?,1m.T'ir-rhl