What do you mean by "help"? Unless you are expecting someone to do your home work for you, you will need to show us what you do understant and what you can do yourself so we will know what help you need. And you can do that by showing us what you have already tried to do yourself.
Now, the problem refers to a "MacLaurin series". Do you know what that is? It also tells you a functon whose integral is \(\displaystyle sinh^{-1}(x)\) . So what do you think the derivative of \(\displaystyle sinh^{-1}(x)\) is? And what does that have to do with the "MacLaurin series"?