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algebraA1451 1

SOSSOSSOSSOS

1111 2

2 3x =

+,

12 3

y =

pi 2 24 4A x xy y= + .

2 3 0At t =

2222 ( )2, 2A x x x + , ( )2 1,B x x+ , ( ), 1x x

) pi pi

) pi ) 1 1 10 pi

3333 28 4 0x x a + =

) pi pi ) pi

) 12

a = pipi pi 2

28 4

16 1x x a

x

+ =

pi

x R 1 = ?

4444 ( )2 210 25 4 4 1

5 2 1x x x xf x

x x

+ += +

. pi

, pipi pi , pi

5555 ) | 2 | 1x , | 8 | 5y pi pi pi 5A x y= + , 2 2B y x xy= +

) 0ab > 2a bb a+ ( ) 1 1 1 9a b c

a b c + + + +

pi 0, 0, 0a b c> > >

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algebraA1451 2

6666 ( ) 1f x x=

) pi ( )2 1 0f + >

) ( ) ( ) ( )( )2 2 2f x f x f f+ =

) pi pi k ( ) ( ) ( )2 1 2 0f k x f k x f+ + + = pi ?

) pi k . 1 2,x x

2 21 2 1 2

1 1 2 4( 1)kx x x x+ + =

7777 ( )29 18 9 2

3 | 1|x xf x x

x

+ += +

+

) pi pipi pi ) ( ) 2 6 6g x x x= + + ,f gC C

) x fC pi gC

) ( ) ( )2015 2 1 0f x x x + +

1 4 3A = , 1 2

3 3,

3 4t t= =

2 ) (2, 4), (5,2), ( 2,1)A B , ) 1

2 = , ) 10 9

12

a =

3 ) 1

2a = , ) 1

4x = , ) 4 1 1,

2(4 1) 4x

xx

=

+,

34

x

=

4 1{ ,5}2f

A R=

5 8 28A , 3 89B 6 ) *R ,) 1x = , ) k R , ) 2k = 7

) { 1}fA R= , ( ) 2 1f x x= + , ) (5,11) , ) ( 1,5)x , ) 1( , 1) ( 1, ]2x