∫ F X DX( ) =2LN 1( +X2)+C B

Câu 7: Cho

( )

2

+

. Khi đó:

1

=

x

A.

^{f x dx}

( )

⁼

^{2ln 1}

⁺

^x

²

⁺

^C

^B.

^{f x dx}

^{( )}

⁼

^{3ln 1}

⁺

^x

²

⁺

^C

C.

^{f x dx}

( )

⁼

^{4ln 1}

⁺

^x

²

⁺

^C

^D.

^{f x dx}

^{( )}

⁼

^{ln 1}

⁺

^x

²

⁺

^C

+

+

−

3

3

1

x

x

x

=

+

+

biết

^F

( )

¹

⁼

¹

₃