Thalis G Gymnasiou.pdf

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    ( ) 34

    106 79 . 210 3616532 - 2103617784 - Fax: 210 3641025

    e-mail : [email protected]

    GREEK MATHEMATICAL SOCIETY 34, Panepistimiou ( leftheriou Venizelou) Street

    GR. 106 79 - Athens - HELLASTel. 210 3616532 - 2103617784 - Fax: 210 3641025

    e-mail : [email protected]

    67

    , 9 2006

    1. x

    2. 2 02

    + + = =10,

    :

    2 2 2( ) ( 2 )2

    = + +

    3. p , 27p + 1 .

    4. , ,

    1 13 103.2 3

    a a

    + =

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    ( ) 34

    106 79 . 210 3616532 - 2103617784 - Fax: 210 3641025

    e-mail : [email protected]

    GREEK MATHEMATICAL SOCIETY 34, Panepistimiou ( leftheriou Venizelou) Street

    GR. 106 79 - Athens - HELLASTel. 210 3616532 - 2103617784 - Fax: 210 3641025

    e-mail : [email protected]

    68

    , 24 2007

    1 :

    ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( )8 2 2 42 : 4 4 : 2 , B 3 3 4 2 3 . x y x y y x = + = + x : > .

    2

    = 40 = .

    .

    () x ,() = .

    3() , ,

    { }0,1,4,5,6,9 = .() A aaabb= , ,a b

    0a , , 9.

    4

    = 30 = . .() = .()

    = .() .

    E

    x

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    ( ) 34

    106 79 . 210 3616532 - 2103617784 - Fax: 210 3641025

    e-mail : [email protected]

    GREEK MATHEMATICAL SOCIETY 34, Panepistimiou ( leftheriou Venizelou) Street

    GR. 106 79 - Athens - HELLASTel. 210 3616532 - 2103617784 - Fax: 210 3641025

    e-mail : [email protected]

    70

    , 21 2009

    1

    , - :2 1 3( 1) ( 1)

    A 4 ( 1) 2 75 5

    v v

    v

    + = + .

    5 2 O 5 2. - .

    5

    3

    1 2, , . 1

    4, 2

    ( ) : 2 y x = (0,6).( ) .() , - y , 1 2,

    2 x

    x . 5

    4 1 2 3, ,r r r 1 2 30 r r r < < < . 1 -

    1 2,r r , 2 -

    2 3,r r .

    2 1 3 2r r r r = 3 13r r = , ( )( )

    1

    2

    , ( )1 ( )2

    1 2 , .

    5

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    71

    , 30 2010

    1. ( )23 2 x y+ = 6 44 6

    3 35 5

    y w

    =

    , :

    7 10 3 87 x y w = + .

    2. , :( ) 4,() ,() 5 ,( )

    1.

    3. . 0 120 = x y , , . , 0 120 = 0 60 = 2 3 , :

    . . . . . .

    4. .

    2 1

    ( ),C , , . 2 .( , C )

    ) .

    ( , , ( ), C .( ),C

    . ( ) ( )1 2

    , , 1 2 ( )

    ( )1

    2

    135

    .

    . x ( ),C x ( ), , .

    5

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    ( ) 34

    106 79 . 3616532 - 3617784 - Fax: 3641025

    e-mail : [email protected]

    GREEK MATHEMATICAL SOCIETY 34, Panepistimiou ( leftheriou Venizelou) Street

    GR. 106 79 - Athens - HELLASTel. 3616532 - 3617784 - Fax: 3641025

    e-mail : [email protected]

    72

    19 2011

    1 , :1 3 710 :10 510 :10 110 1000

    2

    6

    2 :

    35 222 2 4 4 8

    x x x x 9

    x .

    3 Oxy

    3 1 2 y x , , , 2 y x 2,8 .( ) .

    () 4, 4 1, 2 .

    4 . ,C , , .()

    1

    ,C .()

    2

    C , .

    () 12

    43

    . ( 3,1415 ).

    5 : 3 !

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    ( ) 34

    106 79 . 3616532 - 3617784 - Fax: 3641025

    e-mail : [email protected]

    GREEK MATHEMATICAL SOCIETY 34, Panepistimiou ( leftheriou Venizelou) Street

    GR. 106 79 - Athens - HELLASTel. 3616532 - 3617784 - Fax: 3641025

    e-mail : [email protected]

    73

    20 2012

    1

    ( )2 4 6 182

    10 8 612 3 2 3

    2

    , 2 , 4 , 83 13 2 3 4 9

    x y z x y z

    = = = = +

    ,

    .

    2 3 -3

    ( ) ( )4 5 2 3 2 1 x x + < + .

    3

    1

    12

    ( ), ( ), , 0 < < , = :

    32 32 2

    4

    =

    .

    4 = cm < . . 2 = , :

    (i) .(ii)

    .

    5 : 3 !

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    ( ) 34

    106 79 . 3616532 - 3617784 - Fax: 3641025

    e-mail : [email protected]

    GREEK MATHEMATICAL SOCIETY 34, Panepistimiou ( leftheriou Venizelou) Street

    GR. 106 79 - Athens - HELLASTel. 3616532 - 3617784 - Fax: 3641025

    e-mail : [email protected]

    74

    19 2013

    1 5 , :

    3 3 4,6 2 0, 2 .

    2

    4 1 2 5 , x :

    32 1 12

    x x x

    .

    3

    O 2, 6 . , .( ) . () , .() .

    4 ( , )c R ( R )

    , 10

    30

    . . , ( , )c R .

    ( )

    .() .

    5 : 3 !