Y/ = 2XCOSX – X2SINX B

câu 315. - 650 BAI TAP TRAC NGHIEM CHU DE SONG SONG FILE WORD874 CAU HOI TRAC NGHIEM ON TAP TOAN LOP 11 FILE WORD CO DAP AN
650 BAI TAP TRAC NGHIEM CHU DE SONG SONG FILE WORD874 CAU HOI TRAC NGHIEM ON TAP TOAN LOP 11 FILE WORD CO DAP AN

Câu 315.

Hàm số y = x

2

.cosx cĩ đạo hàm là:

A. y

/

= 2xcosx – x

2

sinx

B. y

/

= 2xcosx + x

2

sinx

C. y

/

= 2xsinx – x

2

cosx

D. y

/

= 2xsinx + x

2

cosx