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Phương phap dự đoan và quy nạp potx

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

 !"#

$"%&'
()*+,*-, */+0
12334*$"5 3!56/7#

3$"38"!"93$"5!560.:*
;<=>53?38" 3.
@%=+%&()+,A,B, ,/-C+0
<3"5*D(+)+
(-)+,A) 
(A)+,A,B)E)A-
 
*()-
@F")+G-GA*D!56H
"6<F")!/!+0*34(!)!-/-0
*3>6"38"(!,+)/!,+0-/A0
I

I

3

-53J*/-0F"-!,+*34
+,A,B, ,/-!K+0,/-!,+0)!-,/-!,+0
:!-,/-!,+0)/!,+0-;*34/A083L(!,+)/!,+0-
M;LN$" 338"
I



()+,A)B, ,/-C+0)-
*34O38"33!56*I$2P3.
+7+,-,A, ,)
-7+-,--, ,-)
A7+A,-A, ,A)
Q7+B,-B, ,B).-/,+0-/--,-K+0
!<L";"5
R"6<*3>%&/+0*34O$"O"S*"7")+7-7A 77*";

*"L";"53J*+9
!373%T37"6<*+)$+C$-
*-)$-C$A
 
*)$K$,+
!"4*34*
()/$+K$-0,/$-K$A0, ,/$K$,+0
)$+K$,+
@%=-%&
()
*3477
U4
()
U&
()/+0
)+C
@%=A%&
()
*34()
()

()
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()+V, V,A.AV, ,.V/V)+ A 0
*34+V)-VC+V
V)AVC-V
A.AV)QVCAV
  
.V)/,+0KV
@I

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)/,+0VC+V)/,+0VC+
@%=B%&
()
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U4()/+C
)+C
"6":F"WL&3>%
@%=X%&
()+,-, , ,-+YY/Q0
*"5L"(*
()+,-/+,-, , ,-EE0
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)()+,-/(C-+YY0/B0
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()-+Y+C+
@%=[%&
()+,,-,A, ,/+0
*"5L"(F"*
()+,/+,,-, ,C+0

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()+,/(K0
()+,.(K,+
(/C+0),+C+
()
@%=\%&
()+,-,A-, ,/,+07/+0
*34.(),--,AA, ,/,+0,+
)-K,A-K-,QAKA, ,/,+0C,/,+0K,/,+0,+
)/-,A-,QA, ,/,+00K/,,, 0,/,+0,+
)/+,-,A-,QA, ,/,+00K/+,,-, ,0,/,+0,+
.()(C/M@U[0
]"34/C+0()/,+0,+C
()
@%*33&9$"5
^3!%";


^3%3D
+7
-7
@%=E%&
()+ , A,A.Q, ,/,+0
*34()
@:
/M0
3;()
@%=+Y%&
()+ , B,A.\, ,/AC+0
*34()

)
M/0*34
()
@%=++.%&
()+A,,-A,BA, ,/-,+0A
*34
()_/+A,-A,AA,QA, ,/-,+0A`K_-A,QA,XA, ,/-0A`
)_+A,-A,AA,QA, ,/-,+0A`C\/+A,-A,AA,QA, ,A0
()/M/0KA0
)/,+0-/-,+0-K--/,+0-
)/,+0-/--,Q,+0
@a@I

=3"5383%&333J*933b/cP3"LFX0
^dLN5
,O53J*+9-L";"53J*933*3e+f7*e3
83
()/3"K>Y/!6330,+
,gO%&333J*

9-L";"533*3e+f7*e
383
&)/>K3"0./0-
@%=+-
%&h)+E,-Y,-+, ,+A-
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h)++Q/+A-,+E0-)\XY[
@%=+A%&
1)+,B,E, ,-YYB,-YYE
3J*1L/-YYEK+0Q,+)BYA

1)/-YYE,+0.BYA-)BYBB+B
@a@I=+38338" 3L
@%=+Q^8"2!/!,+0/!,-YCE!C+0!/!,+0)A!/!,+0
Z4%&()+ , A,A.Q, ,/,+0
^8"33+@)!/!,+0/!,-0K/!C+0!/!,+0
)!/!,+0
)!/!,+0.A
)A!/!,+0
^3-*34!/!,+0)!/!,+0.
)i
A!/!C+0)!/!,+0/!,-0K/!C+0!/!,+0
)+ )
()
@%=+B^8"2
!/!,+0/!,-0/!,A0K/!C+0!/!,+0/!,-0)Q!/!,+0/!,-0
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^8"@)!/!,+0/!,-0
)!/!,+0/!,-0.Q
jH*!/!,+0/!,-0)
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A.Q)

/,+0/,-0)
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%33&*

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$7()B,B-,BA, ,BEE,B+YY
37^)[,+Y,+A, ,[X
7U)QE,XQ,\+, ,+XE
M7()+.Q,-.B,A.X,Q.[, ,/,A07)+7-7A7 
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BY3'E
7^(+)+,-(A)X,[,\,E
(-)A,Q,B(Q)+Y,++,+-,+A,+Q
%(+YY)m
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$7+,-,A,Q, ,T)\-Y
37+,
c*33$"38"3"*5L";*
+B7^8"*7h)Q, ,-A,-Q, , YLLnZ*3J*-
$71)-, ,-A, ,-XYAG[G+B
37^)A,AA,AB, ,A+EE++AGQ+
7U)++E,++\,++[, ,++,+B

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