(2 ỦIEỒM) CHO HAỨM SOỎ Y F X( )X3  (M3)X2 3X4 (M LAỨ THAM SOỎ)

2) Tỡm m ủeồ

^{f x}

^{( ) 3}

^

^x

vụựi moùi

^x

^

¹

Ta coự:

3

2

4

( ) 3 ,

1

(

3)

4 0

,

1

3

,

1



  





 

  

 



 

f x

x x

x

m

x

x

m x

2

x

x

( )

3

4

min ( )

 



g x

x

2





x

m

1

g x



vụựi

8

3

8

g x

x

x

g x

x

 





 

 



'( ) 1

,

1 ; '( ) 0

2

3

3

x

x

Ta coự:

min ( ) 0



x



1

g x



Vaọy:

^m

^

⁰

+) BBT: