NẾU 1 ( )D 3G X X2 F X G X D X ∫ = − THÌ 1 ( ) ( )∫ = , 1...

Câu 18. Nếu

1

( )

d 3

g x x

2 f x g x d x

 

∫ = − thì

1

( ) ( )

∫ = ,

1

( )

 

1

A. 7. B. 1. C. 5. D. − 5 .