f(x)=arcsin(1-x)的反函数怎么求?
问题描述:
f(x)=arcsin(1-x)的反函数怎么求?
答
对f(x)=arcsin(1-x)等号两边去正选函数,
sin[f(x)]=sin[arcsin(1-x)]
sin[f(x)]=(1-x)
令[f(x)]=y
sin[y]=(1-x)
x=1-sin[y]