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C tc c chi tr l nh nhau qua cc nm.T l li nhun yu c!u l "#.Trong : D' : c tc nm va quag : tc tng trng c tcks : t l snh l! "#u c$u%n: g &n nm th n snntts(kDkD% =+= ==1) 1 (1.M hnh chit khu lung c tc (DDM)Cng thc tng qut: ch$ m% h&nh c' tn( tr)n( t*c + ( Trong : D' : c tc nm va quag : tc tng trng c tcks: t l snh l! "#u c$u%n: g &n nm th n =++++=ntnststk%nkg D%1,) 1 ( ) 1 () 1 ( -1.M hnh chit khu lung c tc (DDM)M hnh 1 giai on tng trng u_M hnh Gordon Gi thit:C tc hn( nm tn( tr)n( ./i t*c + (.T l tn( tr)n( 0u 12 h3n li tc 45 .6n( ((7"#).) () 1 ( -g )g D(%s +=1.M hnh chit khu lung c tc (DDM)M hnh hai giai onGi thit : 8iai $9n 1 c tc tn( tr)n( ca$ t*c + 8(h8iai $9n : tn( tr)n( n ;nh t*c + ("#< li tc 45 .6n(= ( < t*c + tn( tr)n(*hg< t*c + tn( tr)n( tr$n( (iai $9n tn( tr)n( ca$Ti (ian tn( tr)n( ca$+s s+hg+ttsthgk g kg * D(k* D%) 1 ( - ) () 1 ( - ) 1 ( -) 1 () 1 ( -1,+ + ++++==1.M hnh chit khu lung c tc (DDM)V d 1: M hnh 1 giai o!n C%n( ty ?@C(?@C) cu*i nm nay #A chi tr c tc l :,,, BCD= EFG H IJ,,BCD. KLE H :IM. @iNt 1Ota cPa ?@C l ,.J . mc lQi #uRt Shi rPi r$ l J.IM. Tc #inh l>i cPa th; tr>n( l :,M. UQy ;nh (i c ShiNu ?@C. 1.M hnh chit khu lung c tc (DDM)Hng dn: VS WXn( c%n( thc cPa m% h&nh tn( tr)n( 0uTYnh t$n t*c + tn( tr)n( c tc< (H (1 Z 1)-KLE H 1[.\JM]c ;nh mc #inh l>i yu c!u< "#Hr H r^ _`(rm a r^ ) H 1JMTYnh t$ni igm hin t9i.1.M hnh chit khu lung c tc (DDM)\\ . 1:c[h-) 1 (1) 1 ( ) 1 ( 1) 1 (....) 1 ( ) 1 ( 1\ \\:: 1\\:: 1,=+++++++=++ ++++++=s s s s snsns s skDk kDkDkDkDkDkDkD%1.M hnh chit khu lung c tc (DDM)!u i"##$% tnh to&n#$% '&c (nh d)ng ti*n,h-c .mZ"h%n( thec hin c SS ./i iC 4h%n( tr c tcZiiT chj k2t Nn Wln( c tc = nn 4h%n( Shn nh c (i tr; W$anh n(hiSZ]c ;nh cc chj #* ( = "# l 4h' chYnh kc2. M hnh FCFE+&c (nh ,C,-:FCFE.FCFEt=L!"#$huh%&'"h%()i *+n ),u t- ' "h%( )i *+n l-u ).ng /0ngFCFE. thu nh/p r)ng 0 1chi ph 23C4 0 5h6u hao7811 0 t9 l: n;7 0 thay i u ?ng811 0 t9 l: n;7.2. M hnh FCFECng thc tng qut:

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