函数f (x) 的值在下面的表中给出. x 1 2 3 4 5 f (x) 3 1 5 4 2 如果f^-1存在,那么f^-1 (f^-1 (f^-1) 1) 是多少?
我们首先注意到f (x) =1,所以f (x) =2 因此f (x) =1所以f (x) =1所以f (x) =1所以f (x) =2所以f (x) =2所以f (x) =2所以f (x) =2所以f (x) =2所以f (x) =3所以f (x) =5所以f (x) =3所以f (x) =3所以f (x) =3所以f (x) =3所以f (x) =3所以f (x) =3所以f (x) =3所以f (x) =3所以f (x) =3所以f (x) =3所以f (x) =3所以f (x) =3所以f (x) =3所以f (x) =3所以f (x) =3所以f (x) =3所以f (x) =3所以f (x) =3所以f (x) =3所以f (x) =3所以f (x) =3所以f (x) =3所以f (x) =3所以f (x) =3所以f (x) =3所以f (x) =3所以f (x) =3