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TeU!VSO ⇔ #%!S       +−= += ⇔ π π π π / / k k %  U- Ζ∈ V TŽU!VSx#%!NTŽU π π / + k VS% 1 YO TŽUH π π / + k VSH% 1 XO #$78 !S π π / + k U- Ζ∈ V5:;: #$ !SH π π / + k U- Ζ∈ V5:; #$ 'bDc1idDEjai-.LD &M--NWP Hd 5 F;8#$ HoQ-:#$];8 'kV_lCDmno &M--NpP HM@-&JB.![83DD H(,6.QHYk=C8ƒ '8Fqi--`  &-.//&O  r:?>&s/  HIJKDLD &M--NWP Q:8#E#$-:8FFG@# HCD7@.+#$66@G+#$.I7@ #-RSNT-DU &M--NOP d< :F;8#$ 8CDT-V- &M--NWP 0XAYIZ CDT-V- &[67%'9' ; 4$ I\0 KC. ~6)/  r`F:;8 #$# .     = + [/ %   = − + p;.•2 r.04@@# +[] bC@@#5<0F2no#$ e.06eSO bC@M=5<.‚((2^]#8:; 8#$ KM#M@+[]#]5<00 ,6[<I.< KC.CP5.*Q.: I\0 KC. %~6)/ rr`F;8 #$S#%!H! p;.•2 rr.04@@# h     = + N2nopS ¡ †‡Oˆ % %  f    − = N f O  = ⇔ = ± (0< ! −∞ HO +∞ e bOQHOb   H% % M#$;!SH. 4o SH% M#$;:!S. 42 S% [h %   = − + .F! % H!bYO  ∀ ∈ ¡ <2no#$ 5pSq % %  f %      − = − +  f O %  = ⇔ = ! −∞   %  +∞ e HOb     1 % M#$;:!S  % . 42 S 1 % %h2nopSq f % #%!H = f O  k   / / ? π π = ⇔ = ± + ∈ eeSHx#%!N +[] bC@@#5<0F2no#$ e.06eSOff b C@M=5<8^]#8 :;8#$ KM#M@+[]#]5<00 ,6[<I.< KC.CP5.*Q.: I\W48y.D@8 #$#$S! 1 H! % l%!b57] ;.;: KC.4@#+].@5< 05,6 KC.M@#+[].5<0 5,6 KC.![!".: I\pn8#$: #$ %      + + = + ;!S% KC.4@#+].@5< 05,6 KC.M@#+[].5<0 5,6 KC.![!".: ~~U k / π π + VSH% 1 XO#$; !S k / π π +  / ?∈ . 4o S 1  % k − − ∈/ / ? π π eeU k / π π − + VSƒYO#$;: !S k / π π − + / ?∈ . 42 S 1  % k − + − ∈/ / ? π π x2nopSq eS1! % H%!l% 2]  ∆ S % bkYO   ∀ ∈ q<63 8FeSO]6i A,M#$`57];. ;: k2nopSq†‡Hˆ % % % %  f U V       + + − = + N 1 % ff U V    = + M#$;!S% fU%V O ffU%V O   =  ⇔  <  % % 1 x 1 O U% V % O U% V      + + =  +  ⇔   <  +  1 ⇔ = − A,SH1F#$`; !S% 'bDc1idDEjai-.LD &M--NWP Hd 5 F;8#$ HoQ-:#$];8 'kV_lCDmno &M--NpP HM@-&JB.![83DD HAQ5,6•5 '8Fqi--` [...]... hm s cú tim cn ngang y = 1 vỡ 1 lim f ( x ) = lim + 1ữ = 1 x + x + x IV Cng c, khc sõu kin thc: Nhc li khỏi nim ng tim cn v cỏch xỏc nh tim ngang Thi gian: 3' V Hng dn hc tp nh : - Hc k bi c nh, v xem trc bi mi - Bi tp v nh bi 1,2 SGK trang 30 ch lm phn tim cn ngang Thi gian: 4' VI./ Rỳt kinh nghim: Son ngy thỏng nm 2008 Tit PPCT: 10: Đ4 NG TIM CN(Tip theo) I n nh t chc: Thi gian: 3' - Kim tra... gian: 3' Nhc li nh ngha GTLN, GTNN, cỏch tớnh GTLN, GTNN trờn on V Hng dn hc tp nh : - Lam cac bai tõ p 3 ; 5a - Xem bai o c thờm trang 24 sgk - Xem trc bai ng tiờm cõ n VI./ Rỳt kinh nghim: Son ngy thỏng nm 2008 Cm tit PPCT: 9, 10, 11: Đ4 NG TIM CN Thi gian: 4' A./ MC TIấU BI HC: 10 Kin thc : Khỏi nim ng tim cn ngang, tim cn ng, cỏch tỡm tim cn ngang, tim cn ng 11 K nng : Bit cỏch tỡm tim cn ngang,... Tim cn ng x =-1, x= , Tim cn ngang y= - 1 5 c) Tim cn ng x = -1, Khụng cú tim cn ngang Bi 2 : Tỡm cỏc tim cn ca th cỏc hm s sau: a) y = 2x 9 x2 b) y = x2 + x +1 3 2x 5x 2 x 2 3x + 2 c) y = x +1 d) y = x +1 x 1 d) Tim cn ng x = 1; Tim cn ngang y = 1 IV Cng c, khc sõu kin thc: Nhc li khỏi nim ng tim cn v cỏch xỏc nh tim ngang Thi gian: 3' V Hng dn hc tp nh : Thi gian: 4' - Hc k bi c nh Xem trc... Bi tp v nh bi 1,2 SGK trang 30 Thi gian: 4' VI./ Rỳt kinh nghim: Son ngy thỏng nm 2008 Tit PPCT: 10: BI TP NG TIM CN I n nh t chc: Thi gian: 3' - Kim tra s s, kim tra tỡnh hỡnh chun b bi ca hc sinh - Gii thiu mụn hc v mt s pp hc, chun b mt s vic cn thit cho mụn hc II Kim tra bi c: Kim tra trong quỏ trỡnh lm bi tp Thi gian: ' III./ Dy hc bi mi: 1 t vn : 2 Dy hc bi mi: Thi gian: 35' HOT NG CA GIO VIấN... bi c: Thi gian:5' 3 2 Tỡm GTLN, GTNN ca hm s: y = x -3x 9x + 35 trờn on [-4; 4] III./ Dy hc bi mi: 1 t vn : 2 Dy hc bi mi: Thi gian: 30' HOT NG CA GIO VIấN V HC SINH Hot ng 1: * Gv: Chia hs thanh 4 nhom Nhom 1 giai cõu 2b trờn on [0;3] Nhom 2 giai cõu 2b trờn on [2;5] Nhom 3 giai cõu 2c trờn on [2;4] Nhom 4 giai cõu 2c trờn on [-3;-2] * Hs: Tiờ n hanh hoa t ụ ng nhom va c a i diờn lờn bang Nhom khac... bc 3 Thi gian: 3' V Hng dn hc tp nh : - Hc k bi c nh, v xem trc bi mi - Bi tp v nh bi 1, SGK trang 43 Thi gian: 4' VI./ Rỳt kinh nghim: Son ngy thỏng nm 2008 Tit PPCT: 13: Đ5 KHO ST S BIN THIấN V V TH CA HM S (Tip theo) I n nh t chc: Thi gian: 3' - Kim tra s s, kim tra tỡnh hỡnh chun b bi ca hc sinh - Gii thiu mụn hc v mt s pp hc, chun b mt s vic cn thit cho mụn hc II Kim tra bi c: Thi gian:5' Kho... c th: giao im vi cỏc trc to : giao im vi trc tung : A(0;-3) giao im vi trc honh : B(- 3 ;0); C ( 3 ;0) 2 -5 5 -2 Hm s ó cho l mt hm s chn do ú th nhn trc tung lm trc i xng * Thc hin hot ng 4 (SGK trang 36) Kho sỏt s bin thiờn v v th hm s y = - x4 + 2x2 + 3 Bng th, bin lun theo m s nghim ca phng trỡnh - x4 + 2x2 + 3 = m IV Cng c, khc sõu kin thc: Nhc li kho sỏt hm s a thc bc 3, bc 4 Thi gian: 3'... pt ó cho l s giao im ca th m=2 v m =-2:pt cú hai nghim -2 . trên K thì đ th hàm số đi lên từ trái sang phải +Nu hàm s$ nghcich bin trên K thì đ th hàm số đi xuống từ trái sang phải. 2. Tính đơn điệu và dấu của. về sự đơn điệu của hàm số trên một khoảng K (K R) ? - Từ đồ thị ( Hình 1) trang 4 (SGK) hãy chỉ rõ các khoảng đơn điệu của hàm số y = cosx trên 1 N % %