A:第一、二象限
B:第一、三象限
C:第二、三象限
D:第二、四象限
— Lily, look, a crowd of birds are flying to our small yard.
— Just now, I threw some bread in the yard. They have come here for the food.
定义a1a2a3a4=a1a4﹣a2a3,若f(x)=sinπ-x3cosπ+x1,则f(x)的图象向右平移π3个单位得到的函数解析式为( )