WP 34S problem in solving f'(x)=0

[walter b]

Some clues are some clues but obviously not the entire story. Anyway, thanks for excavating that post of 2013. As mentioned, however, the project started in 2008 - long before many of those folks who think they must comment and assess now even dared to invest work in something like a WP 34S. Of course, with a successful project, many people like to hop on the bandwagon, for better or for worse.

d:-)