THI TOÁN L1 2011(TT TÔ HOÀNG)

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THI TOÁN L1 2011(TT TÔ HOÀNG)

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:': ?'F-i^uNG ,Tenig L.:f-i+.+{ llr, gg,$Aregg} #il TFIH TFIU fiAT 11rr11 r',rlc,{ ?) 4' S$ 44 - P"{ilS 2{}4 E-,]E ?qiriF{*d i{Gf5y ilV' : {}4.224533 3{} - {}4"2A8 t t iZ{} pr-,AN cHUNc cFio lgr c,{, i liLr I (2,(} diilrrr; n"g$fq Fg€y:'{'qlAhl {) Kjt ttui ng&y: A7/#A/2#A "Wrtlll ' "Lt "o:1,-/Ttudi gi*n l&ria b&i 188 phrt! j cac rlti stttH lrlrri so y xr+2(rn- i)xr +(rp'-2tn+i ).r+prr+? l) Kh;io stit & v0 dCj thi harn s6 rn = 2) 'lirn ciic itiir tr.i thLr'c citir Lr.r dc lir'irri s(i co cLlc cJai, cuc tieLr & holnh hai didm thoii rnan I * -t- = l.rx, l, -r, ) t il'; CLIC III ' jrr x 3'' lI Cnu I) (2,0 di0n,) Giai phuong rrinh : sin2x+co.s2.r+7sinx-cosx-4=0 2) Gini bat phuung rrinh f;F \ Cau III '\s, t-'Au IV (1,0 diAnr) &fir s _T$ > *a s&F r# #ss {b \t if 'l'inlr l- (1,{; di0m) ,.t 'f->t J ,'-l o' ,,i' I + g' l:-"- at Cho h.ch6p S,AtsCD c6 dI1, AIJCI) ta hinh chfr nhar v6'i AD=a ,/i CD=Za, SA (ABCD) , sA=3a a>0 Goi K I ld,r lu'or ru rrung didrn cD, sK chfng minh rang : , (SBK) (SAC) & rfnh Vn.*, Cau V (I,t) di€rn) Jl I }* -T I : Ciai phriung iiinir: @ * f.r -r+ l0 = -t 12 rrAu nline ( thi slrrh chi dLrcyc k'rnr plriirr ,,\ hoac phiin Ii ) A.'l'hco chuonii trlrrll chuiilr CAu VIa (2,0 diiirn) l) Dur)ng thluig. ... do(r)s+,fl1r'.,-r)'11 l lx*0 i2y 0.25 I I I L NX: x=l thi -t vonghiqm *r+l vonghiqm *r+l (3) 0.25 d'oc (' - l) * L ' l*-' t'l+ tr-l : g1 '{f! 0.25 ' DAu

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