— ___________
— It's an apartment building.
A:What's your home?
B:Where's your house?
C:What kind of house do you live in?
D:Where's the home?
作出图中物体AB在平面镜中所成的像A′B′.
北京的城市建设目标国家首都、____ 文化名城、宜居城市.
已知反比例函数的图象经过点A(2,﹣3).
(1)求这个函数的表达式;
(2)点B(1,6)是否在这个反比例函数的图象上,并说明理由.
化简求值:已知α为第三象限角,且cosα-π2=-15,求sin2π-αcosπ+αtanπ-αtanπ+αsinπ-α的值.