Presumably the core functions of the 28C/28S and later 48 models were lifted from the 71b saturn development including the algorithms of the 71b math rom.
however, on the 28c/28s i can't find the equivalent of the 71b "PROOT" function. This is the function that returns the complete set of roots (real and complex) for any polynomial. its looks like this has been left out. why? lack of rom space maybe? this is a very powerful and useful function.
the feature is back on the 48, built in to a special polynomial solve menu - i assume this is the same logic underneath.
or is it there and i just can't find it?