CH H PH N 22 ( ) DX  F X X( )D 2F X X 11A. 112  B. 72 ...

Câu 11: Ch h ph n 2

2 ( ) d

xf x x

( )d 2

f x x

1

A. 11

2  B. 7

2  C. 5. D. 5

 2 

x

f x e

 