2 Y=SIN 3 X A) T   B) T  2  C) T  3 T   3 D) 2

câu 85. - 450 CAU TRAC NGHIEM THPT HAY 450 CAU TRAC NGHIEM THPT HAY
450 CAU TRAC NGHIEM THPT HAY 450 CAU TRAC NGHIEM THPT HAY

Câu 85.2 y=sin 3 x

a) T   b) T  2  c)

T  3 

T   3 d) 2