education – How can I use Max[] to find the limit in the Taylor series?

Well, I've been trying to solve this for a moment and it has perplexed me. And yes, this is for the task.

They ask me to look for Max | f ^ n + 1[x]| for all x in an interval [x0,x]. For a taylor polynomial. The problem is that I can not find a way to do this without Max just spitting everything out. Any advice?