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Đề tài: Sử dụng máy tính cầm tay giải một số bài toán trong chương trình toán 10, 11, 12

Chia sẻ: Nguyen Phat | Ngày: | Loại File: PDF | Số trang:55

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Máy tính cầm tay, máy tính bỏ túi đã trở nên thân thuộc với hầu hết mọi học sinh THPT. Có em hầu như không thể "làm được gì" nếu không có cho dùng máy tính đề giải toán. Khi biết sử dụng thành thạo MTCT để giải toán, học sinh còn tự rèn luyện khá năng tư duy thuật toán, qua đó giúp các em củng cố khắc sâu kiến thức hơn, nâng cao khả năng tư duy logic giúp các em học tốt hơn.

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Nội dung Text: Đề tài: Sử dụng máy tính cầm tay giải một số bài toán trong chương trình toán 10, 11, 12

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  6. !  − +  ≥ , ‡T  + −  ≥ mS N *> 3 @ )E , 2 ' - *= (3 #B R ! @ )E , 2 4) 4: ,T − + − + − − = ]‰ c J@ ! A @ )E , 2 ]‰ 03 0 2 fb * cd!e L f 3Te > (+Mg a(Q h L ! i ' - " #B * m1 3 , 0 , #v ' , > , 3S , , A @ )E , 2 & mB 0 0 #v 3 - i * !"n o!EEpoo L !@ f 3Te > (+Mg a(Q h L # i ' - " #B * 9 /0 - 2 , > D ]‡ m1 0 , #v 3 - i "n o!EEpop J L j ,T - + - = (- - =− RJ - D − − #v /0 8 , A @ )E , 2 3& _ 6 @ )E , 2 3* ! )1 8 , A '& ' N ,6 Q 2 0 /)1 , / 1@&&& J L j , − + − * /)1 , / 1@ #v 3 8 − − & )E , < - D − + − * /)1 , / 1@ H , 3 8 − − ' /K , 6 0 3 )# T − − − − # ⇔ − + − + − + − = ⇔ + = − + + + + − + − ⇔ − − = ⇔ = ∨ = $ , > N 36 N *> J @ )E , 2 3 '] , > /0T + − = ( = _ 6 @ )E , 2 T + = + b mS N * > 3 @ )E , 2 ' - *= (3 #B , ‡ T ≥− R ! @ )E , 2 4) 4: ,T + − + = b‰ c J@ ! A @ )E , 2 b‰ 03 0 2 L > !" L # ' - " #B * m1 3 , 0 , #v 3 , > , 3S , , A @ )E , 2 & mB 0 0 #v 3 "# $%&' ('' _ $%&' ('' ) .+ − . 3 *! ? 6 /0 \& m /0 , M 2 A & O # /K , 6 3 0 3 j , ST + = + ‡ !" # $ %# & & ' (& )*+ ))+ ), "
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  8. ! &303 45/ 03 6 7 . 89/ ,!:/ ;- / ?/ ,!@/ A B y~ 2 L T CD E F> G Š / 0 / 0 / 0 J@ > #B \ \ \ ] ] ] 03 # ‹ / J@ > #B L @ = , M )1 , 03 3 , A & CD E F> Š / 0 J@ > #B \ \ \ ] ] ] 03 # ‹ / J@ > #B L @ = , M )1 , 03 3 , A & T + M 3 {/ 4( # \ggx  + , =   , + = c! Q > @ )E , 2 2 j ,Z 6 Š @ T / 0 = , = = , = = = = & "% & & Š !@T '()* & "% ÷ & & = & & $ Q †\&]UWWgWixU 0 † W&]hgUhgb\U] †Œ † U&WWgbgbbV *+ ,-. . / T *+ &T H ! " #$ % &' & % () , > , , A > @ )E , 2 # Q 0 ,@ F   + =   + − = + '+    − =   − + = *+ 0T _ 6 ># T  − = |  + = X _€ md , c \ggx ,  − , =− | ,  + = X _€ $0 c \ggi ,  − , =− |  , , + = X _€ E ]WW] &3 3 45/ 3 6 7 . 89/ ,!:/ ;- /
  9. ! CD E F> G Š / 0 / 0 / 0 J@ > #B \ \ \ ] ] ] b b b 03 # ‹ / J@ > #B L @ = , M )1 , 03 3 , A & CD E F> Š / 0 J@ > #B \ \ \ ] ] ] b b b 03 # ‹ / J@ > #B L @ = , M )1 , 03 3 , A &  + + 1=   + +1=  + + 1= T_6 > @ )E , 2  / 0 = = = = = = = = = = = = = = = 1 2 3T , @ )E , 2 ! (3 ! )1 Q • • Ž † \U # Q † † Ž † U& # 4T [ €: , 3 ] 0 b /0 4: , 0 4• e ; ! #8 49 , 0 :3 0 )E , 2 0 #ˆ & €3 ' 3 , *k 4: , 3 0 L , )K , Q L > 4) 4: , 0 3 / 0 ? 2 ,6 ; @ 6 /J@ @ )E , 2 > @ )E , 2 > #B /0 G , #B /o& [ c! > @ )E , 2 + , > 3S + M 2 #v 3 /‹ GF, II I& [• UVW YXT •X * > 0 2 *! ? 6 L a #v ? /: 0 2 J@ #B / > ' - > e /: > #B& c! 0 2 *! ? 6 L a ] / 2 #v Q' #: 4G / > > #B J@& • €5 , @ ∆ ∇ - - ? /: , G ] , > A >& *+ ,-. . / T *+ T )( !" #$ % &' & %( _6 > @ )E , 2 J L l T  + =  + + 1=   +  +1= ' + − + − , 1 = 1 + =  − + 1=−   *+ JT ) ! " #$ % &' & % ( X8 49 , - 2 , > , , A > @ )E , 2 # Q 0 ,@ F  + +1=  + + + 1=−     + + + 1= '+  + + 1=    +  + 1=   + + −1= !" # $ %# & & ' (& )*+ ))+ ), &
  10. ! &3J3 45/ J D/ 1@ &3J3&3 / , / , D/ K@ ,!@/ A B , / L 7/ ,M ;N ,O F> G & y O . .T 45 , )E , 2 A F> G T ƒc ƒ€Y ƒ€Y \ P &T r^ 5 6 & % " 56 *7 ! " 6 #$ % &'T 0 , D , /: ` A bW > C > C & 7! ? 6 )1 n #B / > # T ]\ \V ]] \x ]W \V \U \b \U ]W \U \] \x \V ]U \V ]\ \U \] \x \i ]b \h \x \g \b \i \g \x \V [ ) ! ) , 4n " # /J@ 6 , @ B #BT ` \] \b \h \U \i \V \x \g ]W ]\ ]] ]b ]U c #B ] ] \ h ] U U ] ] ] \ \ \ bW m- B ,* ` A 0 J@ 0 L ƒc ƒ€Y ƒ€Y \ 1& ' 8 03 )E , 2 B ,* 0* 3 #B / > 5 , #BT L @ T\] X$f{ ‘ ] / + \b X$f{ ‘ ] / + \h X$f{ ‘ \ / + \U X$f{ ‘ h / + \i X$f{ ‘ ] / + \V X$f{ ‘ U / + \x X$f{ ‘ U / + \g X$f{ ‘ ] / + ]W X$f{ ‘ ] / + ]\ X$f{ ‘ ] / + ]] X$f{ ‘ \ / + ]b X$f{ ‘ \ / + ]U X$f{ ‘ \ / + ‹ * * 3 Q3 , #B / > 5 , #B A ' #v < , ! #B / > )1 ) 03& 49 # * L @ \] X$f{ ‘ ] / + 0 2 #v > = D /0 ' ] #B / > )1 * 3 5 , j , \] ‘ X * L @ !@ \b X$f{ ‘ ] /+ 0 2 #v > = D /0 ' i #B / > )1 * 3 #B / > 5 , j , \] 0 #B / > 5 , j , \b & X * * 3 Q3 , 30 #B / > 0 2 #v > = , P /0T J@ 1@ #B / > ,d bW , M& !" #$ % &'( L @ T X$f{ \ b † ) * +(, - . / D , * ) n j , bW #B , M A n /0 bW !" 0 1 2( L @ T X$f{ \ ] † ) * +(, ∑ = / RJ ` , #B / > j , U]\ !" 0 3 4 1 2( L @ T X$f{ \ \ † ) * +(, ∑ = / RJ ` , 2 @ )E , #B / > j , gbh\ !" 5 6 ( 3 L @ T X$f{ ] \ † ) * +(, = ,,,,,, / RJ ` , , M , 2 j , \V biiiiiiV !" #$ 12 (7 L @ T X$f{ ] ] † ) * +(, σ = / !" 4 L !@ @ T Q † ) * +(, , ,/ RJ /> l /0 0 @ )E , # j , , , !" 9: ;< = < > L @ T X$f{ ] b † ) * +(, σ − = / !" 4 2( 8 L !@ @ T Q † ) * +(, 9 :9 ;; l > e /0 0 @ )E , # > e , j , \W \W]bW !" # $ %# & & ' (& )*+ ))+ ), ,
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  14. ! t @ #B _ M : 4 > ”]V U‘ b] U \x bW ”b] U‘ bV U Vi bU ”bV U‘ h] U ]WW hW ”h] U‘ hV U \WW hU ”hV U‘ U] U i UW ∑ hWW | #B , 2 | @ )E , # 0 /> l *+ 0? @ 5)6 & % " "6 B ! " 6 #$ % &'A + , ' hU ! Q(& D 9 QF , E MT / A ‹ Q( 3 , ? )1 , /: )# T \]b \b] \bW \\g \Wi gV \]\ \Wg \\x \]x \b] \\U \bW \]U \]\ \]V \hh \\U \WV \\W \\] \\x \\U \bh \b] \bg \hh \Wh \]x \bx \\h \]\ \]g \]x \\i \bx \]g \\b \WU \h] \]] \b\ \]i \\\ \h] | tJ@ 6 , @ B #B , ^@ / @ / @ /0T ”gW ‘ \WW ”\WW ‘ \\W &&& ”\hW‘ \UW | #B , 2 0 #B , 2 QL@ Qe 4< 6 ,@ B #B , ^@ / @& | #B , M& !" # $ %# & & ' (& )*+ ))+ ),
  15. ! abc6 0 d *e dc f) gh && m- " 3 4: , 3 0 , + Q^ , + B ,C , /L 0 3 3 ,# , 3* 3 ) , H , ' #B 0 * + , ' 3 , # , 3* 3 ! /0 " 3 @ )E , @ @ 3 & 03&3 45/ & 6 ., 8T/ 4 &T L 6 , > , , U G #B J@ @ " 3I % A @ )E , 2 T ./ + ! . = ./ y X8 49 , F> G ) ,6 )# T [ ) \T - E M /)1 , , A # , •a€T / 0 / 0 / 0 / 0 0 J@ ./ + ! . − ./ 03 0 2 & [ ) ]T L 8. 8 J@ #B L *2 03 ' d L = [ ) bT L -- L , M , > 0 4< 3 L = L 1 - ' *! ? 6 > 0 2 & [ ) hT m3 *k L + π - d L ∆ ,S@ - D ./ + ! . − ./ d L 8. 8 L = * + , #8 ,2 , M A r ! ! *! ? 6 /0 , j ,W 2 Q( ) " , > O d ' *2 /0 π & c! * + , @ 6 J π π /0 /: *2 π 3S ‘ &&& R 49 )* + ,@ 6 *2 π 2 L !@ .24 . - − π + π - ∆ &9 & '&5:! 8. 8 = ! *! ? 6 , j ,W 2 ' ' *2 /0 @ ! * + , 2 < > /: 4 3 #B *2 * [ ) UT 2 Q( 3 ' " , > 03 * * + , L ∆ * ,S@ - D ./ + ! . − ./ d L -- L #B J K % 2& & 3L&F >" %M 1N OJ P 2& Q& K R 2& % F% S F% T 1? F ::: d L = L 1 - ' *! ? 6 > 0 2 & [ ? /: /0 !@ ) h 3 *2 3 " , > 0 & O QT B ! Q( , > 0 ' @ 6 /0 \ , > A " * + , ' - L 4 # T .24 . - − + !9 " &5# ;! < - = = ! ' , M , > A " , > / 2 3 ) ) 2 L " , > J ? /: 0 , M* G ‡ π y• Q *! ? 6 A 0 J@ /0T Q ≈ [W g]VbW • * π Q ≈ W Vbx\W • * !" # $ %# & & ' (& )*+ ))+ ),
  16. ! y X8 49 , F> ) ,6 )# T c' , /0 3 F> /0 * ,B , F> G & c' e* /0 # * L ; 5 -- L , M , > 0 4< 3 L = 2 #v < 2 , > D , * + , L \/ G ) F> G &X Q /: L 3 F> )# T [ ) \T - E M /)1 , , A # , •a€T 34 0 J@ - D ./ + ! . − ./ 03 0 2 & [ ) ]T L 8. 8 J@ #B L *2 03 ' d L = [ ) bT L ; 5 -- L , M , > 0 4< 3 L = 1 - ' *! ? 6 > 0 2 & [ ) hT m3 *k L + π - d L ∆ ,S@ - D ./ + ! . − ./ d L 8. 8 L = * + , #8 ,2 , M A r ! ! *! ? 6 /0 , j ,W 2 Q( ) " , > O d ' *2 /0 π & c! * + , @ 6 J π π /0 /: *2 π 3S ‘ &&& R 49 )* + ,@ 6 *2 π 2 L !@ .24 . - − π + π - ∆ &9 & '&5:! 8. 8 = ! *! ? 6 , j ,W 2 ' ' *2 /0 @ ! * + , 2 < > /: 4 3 #B *2 * [ ) UT 2 Q( 3 ' " , > 03 * * + , L ∆ * ,S@ - D ./ + ! . − ./ d L ; 5 -- L #B J K % 2& & 3L&F >" %M 1N OJ P 2& Q& K R 2& % F % S F % T 1? F::: d L = 1 - ' *! ? 6 > 0 2 & [ ? /: /0 !@ ) h 3 *2 3 " , > 0 & y c -/ i,T U , 4 1 B 5 3I &5J " P ( %V > 2& L W(F X > 2 R 5 63 #S( ? > 2 # 5 ( R 2&: * #Y Z 4 , 1 & W( &? (S M : [, 4 1 B 5 3I &5J " K 8 2( +(, 5 4 P9 \ ; R 2& ] F *( W( R 2& +(5 P 1Y & 7& * #C & PF #^ K ( H 5 R 2& J 4 , # # , & !" # $ %# & & ' (& )*+ ))+ ), "
  17. ! P *+ ,-. . / T *+ & *7 ! *+ C "" #1 & % )" _6 @ )E , 2 # T + ! . + ./ =− ' + ./ − ! . = + ./ −,! . = *+ 0T 5 *7 ! *+ C "" #1 & % )" _6 @ )E , 2 # T + ! . − ! . + = '+ ! . + ./ + = + 0 − + 0 + = *+ 2 , > , , j , 4 A @T h b# Q •# ]Q [b U 3# Q†\ ]‘ Q ∈ W‘ π " $X_ %$ ]WWi mXT \ W\Wg‘ ] bx\V *+ J 2 , > , , (3 @ , A @T X Q 3#Q • b # Q[ 3#Q † ] N 7R $% ]WWV mXT ≈ , # 1+ 9 , 2 ≈ # 1+ 9 , *+ 2 , > 4)E , L A @ )E , 2 T # Π = ./ Π + N 7R $% ]WWh − mXT Q†\‘ Q† ‘ Q ≈ W biiW *+ % 2 , > 4)E , L A @ )E , 2 T 3# Π = ! . Π + + N 7R $% ]WWi mXT Q † W U‘ Q ≈ W biiW *+ T 2 , > 4)E , L A @ )E , 2 T # π =! .π + N $X_ \] O $ ! ]WWi mXT Q ≈ W h\gihbbVVi !" # $ %# & & ' (& )*+ ))+ ), $
  18. ! 0303 ;+ , / j / k$ ,` T.$ X/ T. 0303&3 45/ 0 4Y/ +A / k$ ,` T.$ X/ T. mB # 3 UVW X 0 6 # 3 UVW YX 2 ? 2 L /0 ) T ~ 2 89 T 8 9 ~ 2 .9 T 4 9 &T *7 ! * + C "" #1 & % (5 3 , L@ 0 30 ,d V ,)K " b ,)K 03 )K , 9 | c! * + , ' #< @ > N D 9 A b ,)K 3 , )K , 9 2 ' 3 " Z | c! " b ,)K 03 )K , 9 D 9T ) % ' ) – )K , 9 2 ' 3 " Z | R2 * + , @ > D 9 b ,)K #B " /0 8 = [ L T 8 | R2 ' @ > D 9 b ,)K #B " /0 . = & [ L T 4 P *+ ,-. . / ,89/ ,l *+ &T " *7 ! * + C "" #1 & % ( ' \U ,)K 4< , 6 ! j , * + , ' ] ,)K 03 ' - j , | c! *! ? 6 /0 > " h ,)K 3 - L 2 ' 3 *! ? 6 ' -Z | c! *! ? 6 /0 > " ,6 L 2 2 ' 3 *! ? 6 ' -Z | R2 h ,)K * + , D < #B *! ? 6 ' - /0T 8 = , & L T 8 | R2 b ,)K ' D < #B *! ? 6 ' - /0T . = L T 4 030303 45/ 6 . 89/ ,!:/ / k$ ,` T.$ X/ T. €: , 3 0 > : * + , ' 3 ,# , 3* 3 ) , ' O , ' 3 , *2 B , >@ 0 > H , ; ' S 3 , 72 m: " & c' , /0 , @ 6 ,6 +& !" # $ %# & & ' (& )*+ ))+ ), %
  19. ! , Q^ 49 # T & T D ! % < BEFB 5 ( 5 _ 6 @ )E , 2 T 8 + 8 = 8 ,+ y $) , 4n 3 F> G YX 2 ' ` @ 6 L 8. 8 ) * L 4 4L = = = [mN *> T ≥ ∈» - .24 . - .24 . = .24 . - + .24 . .24 . - 8 + .24 . - 8 − .24 . - + 8 , = = = [ L = / 9 * 03 *! ? 6 - D /0 W 2, M /0 @ #B L !@ 0 / 4L = G - Q( 3 ', M 03 /0 , > G * + ,& 0 0 *! ? 6 /0T † i 0 D ! % < BEFB 5 5 _6 L @ )E , 2 T /0 #B < − 8 + 8 ≤ . y $) , 4n 3 F> G [mN *> T ≤ ∈» Q( r /0 & - .24 . - .24 . = .24 . - + .24 . .24 . - − .24 . - 8 + .24 . - 8 − .24 . - 4 = = = [ L = / 9 * 03 *! ? 6 - D ≤W 2, M /0 @ #B * ,S@ , M 2 , H , L !@ 0 / 4L = G - Q( 3 ', M 03 /0 , > G * + ,& 0 0 ' *! ? 6 /0T † h 0 † U& D ! % < BEFB 5 5 ) 4+ _6 L @ )E , 2 T * /0 #B < ≤ , . 9+ + −9 3 y $) , 4n 3 F> G [ •— 0 , 0 0 G H . I ' J KC LM 5 K H H 5 I N K G& R2 ! @ ,6 T ≤9≤ 9 ∈» Q( r /0 ; “ /0 *& .24 . - .24 . .24 . = .24 . = .24 . = + .24 . .24 . - + 3 ÷ .24 . - − .24 . = 3 − , .24 . - + 4 .24 . = + 8. 8 = = − = = = !" # $ %# & & ' (& )*+ ))+ ), &
  20. ! [7 , M - D ≤W 2 J S@ , M 0 & [7 L 2 H , p e L * e #B J@ ≤ #B @ 8 A J@& [7 ? ^ ! #B * ≤ 2 , F , \ E M 3, M r D /0 0 , /: [\ 3 “ # ' 2 D !@ 9 L = = = * “? ^ ! , M ≤ r& X ' 2 /S@ /: 3 0 & [ _S@ GF, II I D /0 * ', M J@ / E #B @ 8 A J@& L -? /: - D L 8. 8 - J@ , M & [$- /0 0 2 H , e G > B S@ , M ‘* + ˜\W 2 ; '* 6 F , D ! / ? 2 L @ L / & [ 0 0 ' *! ? 6 /0T ‘ * /0T W‘ W \‘ W \‘ \ ]‘ ] b‘ b & JT D ! % < BEFB 5 5 5 + − _6 > @ )E , 2 3 > D # T8 + 8 8 =, [mN *> T ≤ + ≤ 2 ∈» Q( r /0 Q ; “ /0 &  8 + = ,8  ⇒ 8 + 8 = ,8 + 8 ⇔ 8 + 8 − 8 = +  + + − + −  8 = 8  + − + + .24 . - .24 . .24 . = .24 . = .24 . = + .24 . .24 . - 8 .24 . = + + .24 . - 8 .24 . = − − .24 . - + 8 .24 . = 8. 8 = = = = = [ L = 0* 03 , M - D /0 W 2 S@ Q ' /0 , > & [7 L p /0 , M A E , M A Q E M& €3 ' * “ : F , 4 * E r E M 2 J@ F , r / \ E M , /: “ /0 W& $3S * L 0 L Y••ƒ• 2 H , F , r / \ E M , /: “ /0 W 0 !@ 9 L = = = [ 0 0 ' *! ? 6 /0T Q‘ /0T x‘ b & P ;+ , / ,89/ ,l *+ &T mN B , >@ $% ]WWh [ ]WWU _6 L @ )E , 2 T /0 #B < 8 − + +8 + ≤ . *+ 0T mN m: " 7 B € [ ]WWx 2 , 4)E , T 8 +8 + +8 − = mXT † i !" # $ %# & & ' (& )*+ ))+ ), ,
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