I'm your English teacher Helen Green. You can call me _______.
A:Ms. Helen
B:Mr. Helen
C:Ms. Green
D:Mr. Green
对于道德与法律关系,右边的图示表示的是( )
(Ⅰ)求f(x)的解析式;
(Ⅱ)当 x∈π12,π2 ,求f(x)的值域.