( 10 1) LOG3X- 3 (X>0)( 10 1) XLOG33ĐẶT T = ; T>010 11233...

1.Đưa về:

^{( 10 1)}

^

^log

³

^x

-

3

(x>0)

(

10 1

)



x

log

3

Đặt t =

; t>0

10 1

1

2



3



3t

²

-2t -3

^

0

^

t

^

t



t

-



x



3

d

x



(

)







1

1

2

6

1

cot(

)

dx

x

I

x

 









2

1

(

)

8

sin (

)

8

2

6





cos x





