CHO  F X DX ( )  3 X 2  4 X C  . TÌM  F (E ) DX XCÂU 30

Câu 30: Cho  f x dx ( )  3 x ²  4 x C  ^{. Tìm}  ^{f (e ) dx x}

x x x

f dx  e  e  C

(e ) 4

A. 3 ²

 ^B.  ^{f (e ) x dx  3 e 2 x  4 e x  C .}

2

C.  f (e ) ^x dx  6 e ^x  4 x C  . ^D.  ^{f (e ) x dx  6 e x  4 x C  .}