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
)= ___ .

令arcsin(2x+1)=

π
6

即sin
π
6
=2x+1=
1
2

解得x=-
1
4

故答案为:-
1
4