I prefer to be ______ at a hotel with free room service and access to the Internet.

A．put up

B．set up

C．made up

D．picked up

设函数f(x)在[a，b]上一阶可导，在(a，b)内二阶可导，且f(a)=f(b)=0，f’(a)f’(b)＞0．求证：
(Ⅰ)

使得f’(ξ)=f(ξ)；
(Ⅱ)

使得f"(η)=f(η)．