已知函数f(x)=arcsin(2x+1),则f-1(π6)= _ .
问题描述:
已知函数f(x)=arcsin(2x+1),则f-1(
)= ___ .π 6
答
令arcsin(2x+1)=
π 6
即sin
=2x+1=π 6
1 2
解得x=-
1 4
故答案为:-
1 4