A) ( )( )LIM 3 1LIM 1( )3−X+ B) ( ) 3− + C) 3 2→+X X→−∞N N13 1

Bài 1. Tính: a) ( )( )

lim 3 1

lim 1

( )

3

x

+ b) ( ) 3

− + c) 3 2

+

x x

→−∞

n n

1

3 1