In many textbooks you "show" that (a+b)(a+b)=a^2+2ab+b^2 by drawing arrows like in the attached image.
How can I do that in LyX?
with LaTeX (ERT), on p. 120 you'll find an example http://www.ctan.org/tex-archive/info/math/voss/Voss-Mathmode.pdf
Herbert
-- http://TeXnik.de/ http://PSTricks.de/ ftp://ftp.dante.de/tex-archive/info/math/voss/Voss-Mathmode.pdf http://www.dante.de/faq/de-tex-faq/ http://www.tex.ac.uk/cgi-bin/texfaq2html?introduction=yes
