X X U UA A A A U A A( )

2. - 31TRAC NGHIEM NANG CAO LAY 10D THPTQG HAY
31TRAC NGHIEM NANG CAO LAY 10D THPTQG HAY

2.4.Đạo hàm:

x x u u

a a a a u a a

( ) .ln ( ) . .ln

     

( ) ( ) .

e e e e u

u u

   

( )

nn n1

n u

.