CHO HÀM SỐ Y = COS 2X1−SINX

câu 322. - 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

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Câu 322.

Cho hàm số y =

cos 2

x

1

−

sin

x

. y

^/

(

^π

6

)

^bằng:

A. y

^/

(

^π

6

)

^{= 1}

^{B. y}

^/

(

^π

6

)

^{= –1}

^{C. y}

^/

(

^π

6

)

⁼²

^{D. y}

^/

(

^π

6

)

^=–2