# Schoofs Algorithm

On page 125 he says that we could write $$y'/y$$ as a function of $$x$$, which makes sense since earlier on the page he denotes $$y'= r_{2,j}(x)y$$.

But I can't find any definition of $$r_{2,j}(x)$$ although he referenced p.47. So what would be the definition of $$r_{2,j}(x)$$?

• Note I've looked at the errata for edition 2 but not listed. – kelalaka Sep 17 at 14:58
• Your second link goes to page 112, not 125. page 125 of the book is page 138 of the pdf. I did not see the statement you're referencing on either page, so I'm not sure which is the correct one. – Maeher Sep 17 at 16:25
• I'm sorry, the links were edited. But @kelalaka helped a lot. It is in deed listed at the errata section. The reference to page 47 seemed to be false, instead page 51 would be correct. – WonderHow20 Sep 18 at 10:53
• Oh, I missed that :) – kelalaka Sep 18 at 10:55
• Post an answer and close it? – kelalaka Sep 18 at 11:01