John was an extremely prolific contributor to the comp.sys.hp48 newsgroup, helping fellow calculator users for decades with in-depth, useful posts. Was a resident of Fairfield, IA. December 28, 1942 - January 30, 2014
Supply the start and end points of an interval, and an increment for evaluating the function at equally spaced points within the interval; then the program searches the whole interval, looking for roots (as indicated by sign changes or exact solutions at consecutive incremental points along the interval).
Replacement for the entire units menu system, with menus you choose yourself. You get a main units menu, with as many sub-menus as you wish, plus an additional program which goes immediately to a menu of units you can convert to, given any existing unit object.
User RPL program which solves a triangle immediately after being given three inputs. Also solves the dual-solution SSA problem. Includes commented source code and gives information on how to modify it to show both SSA solutions after only running the program once.
XC49 performs hassle-free HP 49G/G+ CAS commands (in RPN mode) so that they don't force you to delete variables, don't fail because of variables which already exist, don't prompt for any mode changes, and don't leave any modes changed after execution.