I'm just going to show a little snippet of it so we can use it as the basis for a problem this is kinda the meat of fair use law the viewer may fairly cite from the original work if it is design if his design be really and truly to use the passages for the purposes for fair and reasonable criticism in this case it's fair and reasonable math problem or physics problem on the other hand it is as clear he thus cites the most important parts of the work. with the view not to criticize but to supercede the the use of the original work and substitute the review for it such a use will be deemed in law a piracy so in no way do I want to supersede it.