Hi there, I'm doing some basic data handling, at the moment I'm on sources of error i.e measured values and fractional errors.
I've attached a scan of the page.
My question is how do you come to a/b(fa-fb)?
I know Q=a/b
so Qm-Q=a(1+fa)/b(1+fb) - a/b so i factorise to get a/b(1+fa/1+fb - 1)
which equals a/b(fa-fb/1+fb)...so from here I don't know how to get the result in the book.