Recent changes to 951: und not propagated through functionshttps://sourceforge.net/p/maxima/bugs/951/2006-07-01T06:30:50Zund not propagated through functions2006-07-01T06:30:50Z2006-07-01T06:30:50ZRobert Dodierhttps://sourceforge.net/u/userid-501686/https://sourceforge.net2ea55868e2f6e267ef6b0f13a44e5b92ecd5d56fThe symbol und, which I guess stands for undefined,
isn't propagated through functions, e.g.,
\[sin\(und\), sqrt\(und\), log\(und\), und^2, exp\(und\)\]
=> \[sin\(und\),sqrt\(und\),log\(und\),und^2,%e^und\]
An example found in the wild:
limit\(atan\(tan\(x\)^2\),x,inf\); => atan\(und\)
Not sure what's the right answer for foo\(und\) in
general, but it seems like atan\(und\) is probably not
the best answer in this particular case.