问题
解答题
已知函数f(x)=
|
答案
f(-
)=sin(-11 6
π)=-sin11 6
π=-sin(2π-11 6
)=sinπ 6
=π 6
f(1 2
)=f(11 6
)-1=f(-5 6
)-2=sin(-1 6
)-2=-π 6 5 2
∴f(-
)+f(11 6
)=11 6
-1 2
=-25 2
已知函数f(x)=
|
f(-
)=sin(-11 6
π)=-sin11 6
π=-sin(2π-11 6
)=sinπ 6
=π 6
f(1 2
)=f(11 6
)-1=f(-5 6
)-2=sin(-1 6
)-2=-π 6 5 2
∴f(-
)+f(11 6
)=11 6
-1 2
=-25 2